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Full Version: (v2.2.7) Clashed when AutoUV unfolding
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Hello!
I'm happend two times to this error in AutoUV Process.
The one had caued OS System Error report dialog, Another one caused Wings3D crash.
Both of case happend in unfolding for Thread screw object.

I didn't edit the screw object. And I did just AutoUV work for it.
  1. Make a primitive by Thread screw Plugin.
  2. Do AutoUV Command.
  3. Segimenting by Feature projection. (No seam made by manually)
  4. Unfolding
  5. Crash

My Enviroment MacOS11 , Wings3D v2.2.7
MacOS Crash Reporter
Code:
Path:                  /Applications/Wings3D227.app/Contents/Resources/bin/beam.smp
Identifier:            com.wings3d.wings3d
Version:               1.5 (0.1)
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           beam.smp [1168]
User ID:               501

Date/Time:             2021-05-11 12:31:34.376 +0900
OS Version:            macOS 11.2.3 (20D91)
Report Version:        12
Bridge OS Version:     5.2 (18P4347)

Time Awake Since Boot: 10000 seconds
Time Since Wake:       6300 seconds

System Integrity Protection: enabled

Crashed Thread:        27  12_dirty_cpu_sc

Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Application Specific Information:
Assertion failed: (is_symmetric(Auu,1.0) && "Auu should be symmetric if positive definite"), function min_quad_with_fixed_precompute, file ../_deps/libigl/include/igl/min_quad_with_fixed.cpp, line 122.


Thread 0:: Dispatch queue: com.apple.main-thread
0   libsystem_platform.dylib          0x00007fff204cb1e4 _platform_memmove$VARIANT$Haswell + 356
1   com.apple.CoreGraphics            0x00007fff250d894e CGBlt_copyBytes + 702
2   com.apple.QuartzCore              0x00007fff26d3f214 CABackingStorePrepareUpdates_(CABackingStore*, unsigned long, unsigned long, unsigned int, unsigned int, unsigned int, unsigned long long, CA::GenericContext*, UpdateState*) + 3960
3   com.apple.QuartzCore              0x00007fff26d3e00f CABackingStoreUpdate_ + 332
4   com.apple.QuartzCore              0x00007fff26da3141 invocation function for block in CA::Layer::display_() + 53
5   com.apple.QuartzCore              0x00007fff26d3d4c4 -[CALayer _display] + 2183
6   com.apple.AppKit                  0x00007fff22f0ebb1 -[_NSBackingLayer display] + 475
7   com.apple.AppKit                  0x00007fff22e7a0f5 -[_NSViewBackingLayer display] + 555
8   com.apple.QuartzCore              0x00007fff26d3c4c8 CA::Layer::display_if_needed(CA::Transaction*) + 874
9   com.apple.QuartzCore              0x00007fff26e7c5fb CA::Context::commit_transaction(CA::Transaction*, double, double*) + 517
10  com.apple.QuartzCore              0x00007fff26d1de95 CA::Transaction::commit() + 783
11  com.apple.AppKit                  0x00007fff22f23e22 __62+[CATransaction(NSCATransaction) NS_setFlushesWithDisplayLink]_block_invoke + 285
12  com.apple.AppKit                  0x00007fff23672ec2 ___NSRunLoopObserverCreateWithHandler_block_invoke + 41
13  com.apple.CoreFoundation          0x00007fff20580dad __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
14  com.apple.CoreFoundation          0x00007fff20580c3d __CFRunLoopDoObservers + 549
15  com.apple.CoreFoundation          0x00007fff205800ed __CFRunLoopRun + 838
16  com.apple.CoreFoundation          0x00007fff2057f6ce CFRunLoopRunSpecific + 563
17  com.apple.HIToolbox               0x00007fff28807630 RunCurrentEventLoopInMode + 292
18  com.apple.HIToolbox               0x00007fff2880742c ReceiveNextEventCommon + 709
19  com.apple.HIToolbox               0x00007fff2880714f _BlockUntilNextEventMatchingListInModeWithFilter + 64
20  com.apple.AppKit                  0x00007fff22d9f9b1 _DPSNextEvent + 883
21  com.apple.AppKit                  0x00007fff22d9e177 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1366
22  com.apple.AppKit                  0x00007fff22d9068a -[NSApplication run] + 586
23  wxe_driver.so                     0x0000000016589cbe wxGUIEventLoop::OSXDoRun() + 174
24  wxe_driver.so                     0x000000001685689c wxCFEventLoop::DoRun() + 44
25  wxe_driver.so                     0x00000000167c235e wxEventLoopBase::Run() + 158
26  wxe_driver.so                     0x0000000016793643 wxAppConsoleBase::MainLoop() + 99
27  wxe_driver.so                     0x000000001653566a wxApp::OnRun() + 26
28  wxe_driver.so                     0x00000000167faf88 wxEntry(int&, wchar_t**) + 56
29  wxe_driver.so                     0x00000000163fb66d wxe_main_loop(void*) + 541
30  beam.smp                          0x000000001409863f erts_sys_main_thread + 319
31  beam.smp                          0x0000000013f59f0e erl_start + 11118

Thread 1:: sys_sig_dispatc
0   libsystem_kernel.dylib            0x00007fff2045589e read + 10
1   beam.smp                          0x00000000140987fa signal_dispatcher_thread_func + 90

Thread 2:: sys_msg_dispatc
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x0000000014129a86 ethr_cond_wait + 6

Thread 3:: async_1
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 4:: 1_scheduler
0   libsystem_kernel.dylib            0x00007fff2045d1fe __select + 10
1   beam.smp                          0x000000001412ce6a wait__ + 890

Thread 5:: 2_scheduler
0   libsystem_kernel.dylib            0x00007fff2045d1fe __select + 10
1   beam.smp                          0x000000001412ce6a wait__ + 890

Thread 6:: 3_scheduler
0   libsystem_kernel.dylib            0x00007fff2045d1fe __select + 10
1   beam.smp                          0x000000001412ce6a wait__ + 890

Thread 7:: 4_scheduler
0   libsystem_kernel.dylib            0x00007fff2045d1fe __select + 10
1   beam.smp                          0x000000001412ce6a wait__ + 890

Thread 8:: 5_scheduler
0   libsystem_kernel.dylib            0x00007fff20454f86 swtch_pri + 10
1   libsystem_pthread.dylib           0x00007fff2048707c cthread_yield + 11
2   beam.smp                          0x0000000013f05345 erts_schedule + 18309

Thread 9:: 6_scheduler
0   beam.smp                          0x0000000013f0532f erts_schedule + 18287

Thread 10:: 7_scheduler
0   libsystem_kernel.dylib            0x00007fff2045d1fe __select + 10
1   beam.smp                          0x000000001412ce6a wait__ + 890

Thread 11:: 8_scheduler
0   libsystem_kernel.dylib            0x00007fff2045d1fe __select + 10
1   beam.smp                          0x000000001412ce6a wait__ + 890

Thread 12:: 9_scheduler
0   libsystem_kernel.dylib            0x00007fff2045d1fe __select + 10
1   beam.smp                          0x000000001412ce6a wait__ + 890

Thread 13:: 10_scheduler
0   libsystem_kernel.dylib            0x00007fff2045d1fe __select + 10
1   beam.smp                          0x000000001412ce6a wait__ + 890

Thread 14:: 11_scheduler
0   libsystem_kernel.dylib            0x00007fff204597e2 kevent + 10
1   beam.smp                          0x000000001409e2fa erts_poll_wait + 554

Thread 15:: 12_scheduler
0   libsystem_kernel.dylib            0x00007fff2045d1fe __select + 10
1   beam.smp                          0x000000001412ce6a wait__ + 890

Thread 16:: 1_dirty_cpu_sch
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 17:: 2_dirty_cpu_sch
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 18:: 3_dirty_cpu_sch
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 19:: 4_dirty_cpu_sch
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 20:: 5_dirty_cpu_sch
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 21:: 6_dirty_cpu_sch
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 22:: 7_dirty_cpu_sch
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 23:: 8_dirty_cpu_sch
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 24:: 9_dirty_cpu_sch
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 25:: 10_dirty_cpu_sc
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 26:: 11_dirty_cpu_sc
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 27 Crashed:: 12_dirty_cpu_sc
0   libsystem_kernel.dylib            0x00007fff2045b462 __pthread_kill + 10
1   libsystem_pthread.dylib           0x00007fff20489610 pthread_kill + 263
2   libsystem_c.dylib                 0x00007fff203dc720 abort + 120
3   libsystem_c.dylib                 0x00007fff203db9d6 __assert_rtn + 314
4   libigl.so                         0x0000000068cba27d bool igl::min_quad_with_fixed_precompute<double, Eigen::Matrix<int, -1, 1, 0, -1, 1> >(Eigen::SparseMatrix<double, 0, int> const&, Eigen::MatrixBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> > const&, Eigen::SparseMatrix<double, 0, int> const&, bool, igl::min_quad_with_fixed_data<double>&) + 16141
5   libigl.so                         0x0000000068cb0140 igl::lscm(Eigen::Matrix<double, -1, -1, 0, -1, -1> const&, Eigen::Matrix<int, -1, -1, 0, -1, -1> const&, Eigen::Matrix<int, -1, 1, 0, -1, 1> const&, Eigen::Matrix<double, -1, -1, 0, -1, -1> const&, Eigen::Matrix<double, -1, -1, 0, -1, -1>&) + 5280
6   libigl.so                         0x0000000068cae969 lscm_nif + 217
7   beam.smp                          0x000000001406a95f erts_call_dirty_nif + 383
8   libigl.so                         0x0000000068cae890 make_listT2d(enif_environment_t*, Eigen::Matrix<double, -1, -1, 0, -1, -1>&) + 320

Thread 28:: 1_dirty_io_sche
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 29:: 2_dirty_io_sche
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 30:: 3_dirty_io_sche
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 31:: 4_dirty_io_sche
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 32:: 5_dirty_io_sche
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 33:: 6_dirty_io_sche
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 34:: 7_dirty_io_sche
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 35:: 8_dirty_io_sche
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 36:: 9_dirty_io_sche
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 37:: 10_dirty_io_sch
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x000000001412cc21 wait__ + 305

Thread 38:: aux
0   libsystem_kernel.dylib            0x00007fff2045d1fe __select + 10
1   beam.smp                          0x00000000140ad939 erts_poll_wait_flbk + 969

Thread 39:: 0_poller
0   libsystem_kernel.dylib            0x00007fff204597e2 kevent + 10
1   beam.smp                          0x000000001409e198 erts_poll_wait + 200

Thread 40:
0   libsystem_pthread.dylib           0x00007fff20485458 start_wqthread + 0

Thread 41:: com.apple.NSEventThread
0   libsystem_kernel.dylib            0x00007fff20454e7e mach_msg_trap + 10
1   libsystem_kernel.dylib            0x00007fff204551f0 mach_msg + 60
2   com.apple.CoreFoundation          0x00007fff20581bf7 __CFRunLoopServiceMachPort + 316
3   com.apple.CoreFoundation          0x00007fff205802ca __CFRunLoopRun + 1315
4   com.apple.CoreFoundation          0x00007fff2057f6ce CFRunLoopRunSpecific + 563
5   com.apple.AppKit                  0x00007fff22f257c6 _NSEventThread + 124
6   libsystem_pthread.dylib           0x00007fff20489950 _pthread_start + 224
7   libsystem_pthread.dylib           0x00007fff2048547b thread_start + 15

Thread 42:: ecl_thread
0   libsystem_kernel.dylib            0x00007fff204578e2 __psynch_cvwait + 10
1   libsystem_pthread.dylib           0x00007fff20489e6f _pthread_cond_wait + 1254
2   beam.smp                          0x0000000014129a86 ethr_cond_wait + 6
3   cl_nif.so                         0x0000000075c9366f ecl_message_recv + 47
4   cl_nif.so                         0x0000000075c93144 ecl_context_main + 36

Thread 43:
0   libsystem_pthread.dylib           0x00007fff20485458 start_wqthread + 0

Thread 44:
0   libsystem_pthread.dylib           0x00007fff20485458 start_wqthread + 0

Thread 45:
0   libsystem_pthread.dylib           0x00007fff20485458 start_wqthread + 0

Thread 27 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x000070000cb88000  rcx: 0x000070000cb86db8  rdx: 0x0000000000000000
  rdi: 0x0000000000001b03  rsi: 0x0000000000000006  rbp: 0x000070000cb86de0  rsp: 0x000070000cb86db8
   r8: 0x000000000000007a   r9: 0xcccccccccccccccd  r10: 0x000070000cb88000  r11: 0x0000000000000246
  r12: 0x0000000000001b03  r13: 0x0000000062ac0000  r14: 0x0000000000000006  r15: 0x0000000000000016
  rip: 0x00007fff2045b462  rfl: 0x0000000000000246  cr2: 0x0000000062ac0000
  
Logical CPU:     0
Error Code:      0x02000148
Trap Number:     133

Thread 27 instruction stream not available.

Thread 27 last branch register state not available.


Binary Images:
        0x13ee2000 -         0x141bafff +beam.smp (0) <8174ACE3-56EA-3D98-B0DF-0204626FB167> /Applications/Wings3D227.app/Contents/Resources/bin/beam.smp
        0x1551f000 -         0x15520fff +wings_pick_nif.so (0) <5B42E08F-26A0-39A9-92D3-1EDD70911176> /Applications/Wings3D227.app/Contents/Resources/lib/wings-2.2.7/priv/wings_pick_nif.so
        0x15644000 -         0x15653fff  libobjc-trampolines.dylib (818.2) <29187EF9-2BD6-3ABF-8088-DE708721B612> /usr/lib/libobjc-trampolines.dylib
        0x16340000 -         0x16c41fff +wxe_driver.so (0) <13E0990F-4A27-33ED-A2C6-0A493098CEE7> /Applications/Wings3D227.app/Contents/Resources/lib/wx-1.9.3/priv/wxe_driver.so
        0x1f65b000 -         0x1f6f6fff  dyld (832.7.3) <0D4EA85F-7E30-338B-9215-314A5A5539B6> /usr/lib/dyld
        0x62f0a000 -         0x62f23fff +erl_gl.so (0) <584BABE5-06C5-304C-8661-E36B77BB19A3> /Applications/Wings3D227.app/Contents/Resources/lib/wx-1.9.3/priv/erl_gl.so
        0x68ca9000 -         0x68d7afff +libigl.so (0) <C0B6ED9E-A5CE-3948-9A31-B6460923FDFC> /Applications/Wings3D227.app/Contents/Resources/lib/wings-2.2.7/priv/libigl.so
        0x726a1000 -         0x72a20fff  com.apple.AMDRadeonX6000MTLDriver (4.2.15 - 4.0.2) <56DBFC8D-9ABB-34AE-873F-CAF3E6A184D5> /System/Library/Extensions/AMDRadeonX6000MTLDriver.bundle/Contents/MacOS/AMDRadeonX6000MTLDriver
        0x73149000 -         0x7329cfff  com.apple.AMDRadeonX6000GLDriver (4.2.15 - 4.0.2) <6A663F3B-05F2-35F1-9832-C0E3645C7E08> /System/Library/Extensions/AMDRadeonX6000GLDriver.bundle/Contents/MacOS/AMDRadeonX6000GLDriver
        0x75c82000 -         0x75c98fff +cl_nif.so (0) <2B7D08FB-CAED-334F-AA67-8C44DA230465> /Applications/Wings3D227.app/Contents/Resources/lib/cl-1.2.2/priv/cl_nif.so
    0x7fff201be000 -     0x7fff201bffff  libsystem_blocks.dylib (78) <E644CAA0-65B7-36E4-8041-520F3301F3DB> /usr/lib/system/libsystem_blocks.dylib
    0x7fff201c0000 -     0x7fff201f5fff  libxpc.dylib (2038.80.3) <70F26262-01AA-3CEC-9FAD-2701D24096F0> /usr/lib/system/libxpc.dylib
    0x7fff201f6000 -     0x7fff2020dfff  libsystem_trace.dylib (1277.80.2) <87FEF600-48D9-31C9-B8FC-D5249B2AE95D> /usr/lib/system/libsystem_trace.dylib
    0x7fff2020e000 -     0x7fff202adfff  libcorecrypto.dylib (1000.80.5) <1EB11CFB-ABD7-36DD-97C7-C112A6601416> /usr/lib/system/libcorecrypto.dylib
    0x7fff202ae000 -     0x7fff202dafff  libsystem_malloc.dylib (317.40.8) <A498D1EF-E43D-310C-84E8-9C0AADA0C475> /usr/lib/system/libsystem_malloc.dylib
    0x7fff202db000 -     0x7fff2031ffff  libdispatch.dylib (1271.40.12) <AD988EEA-1A2F-3404-9A6E-390FC2504223> /usr/lib/system/libdispatch.dylib
    0x7fff20320000 -     0x7fff20358fff  libobjc.A.dylib (818.2) <EB6B543F-D42C-3FB2-A2EC-43407C5F80D3> /usr/lib/libobjc.A.dylib
    0x7fff20359000 -     0x7fff2035bfff  libsystem_featureflags.dylib (28.60.1) <9CECB43A-094E-3CA9-B730-24DEA1A6DE05> /usr/lib/system/libsystem_featureflags.dylib
    0x7fff2035c000 -     0x7fff203e4fff  libsystem_c.dylib (1439.40.11) <4AF71812-4099-3E96-B271-1F259491A2B2> /usr/lib/system/libsystem_c.dylib
    0x7fff203e5000 -     0x7fff2043afff  libc++.1.dylib (904.4) <B217D905-4F9C-3DE0-8844-88FAA3C2C851> /usr/lib/libc++.1.dylib
    0x7fff2043b000 -     0x7fff20453fff  libc++abi.dylib (904.4) <3C9FE530-3CD2-3A64-8A36-70816AEBDF0D> /usr/lib/libc++abi.dylib
    0x7fff20454000 -     0x7fff20482fff  libsystem_kernel.dylib (7195.81.3) <AB413518-ECDE-3F04-A61C-278D3CF43076> /usr/lib/system/libsystem_kernel.dylib
    0x7fff20483000 -     0x7fff2048efff  libsystem_pthread.dylib (454.80.2) <B989DF6C-ADFE-3AF9-9C91-07D2521F9E47> /usr/lib/system/libsystem_pthread.dylib
    0x7fff2048f000 -     0x7fff204c9fff  libdyld.dylib (832.7.3) <4641E48F-75B5-3CC7-8263-47BF79F15394> /usr/lib/system/libdyld.dylib
    0x7fff204ca000 -     0x7fff204d3fff  libsystem_platform.dylib (254.80.2) <1C3E1A0A-92A8-3CDE-B622-8940B43A5DF2> /usr/lib/system/libsystem_platform.dylib
    0x7fff204d4000 -     0x7fff204fffff  libsystem_info.dylib (542.40.3) <0C96CFE8-71F5-3335-8423-581BC3DE5846> /usr/lib/system/libsystem_info.dylib
    0x7fff20500000 -     0x7fff2099bfff  com.apple.CoreFoundation (6.9 - 1774.101) <2A0E160E-9EE6-3B23-8832-6979A16EC250> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
    0x7fff2099c000 -     0x7fff20bcbfff  com.apple.LaunchServices (1122.11 - 1122.11) <9ACD5692-3B92-3E6E-8B24-56ADCC911556> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/LaunchServices
    0x7fff20bcc000 -     0x7fff20c9ffff  com.apple.gpusw.MetalTools (1.0 - 1) <B1FDD261-7707-3E20-A6C2-99D9AF46356B> /System/Library/PrivateFrameworks/MetalTools.framework/Versions/A/MetalTools
    0x7fff20ca0000 -     0x7fff20f03fff  libBLAS.dylib (1336.40.1) <92702864-A5C6-3E22-86F6-DB329532674A> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib



=== Omission  ===


    0x7fff46d93000 -     0x7fff46d9efff  libGPUSupportMercury.dylib (18.1.1) <1321060E-8F56-3917-8F4D-510A4DB45798> /System/Library/PrivateFrameworks/GPUSupport.framework/Versions/A/Libraries/libGPUSupportMercury.dylib
    0x7fff48401000 -     0x7fff48450fff  com.apple.osanalytics.OSAnalytics (1.0 - 1) <CADD88A2-87A8-3879-8759-D3C112A6844F> /System/Library/PrivateFrameworks/OSAnalytics.framework/Versions/A/OSAnalytics
    0x7fff5238f000 -     0x7fff523bdfff  com.apple.HelpData (2.3 - 200) <76AA2951-C5AA-3A31-A4CA-62E28DF02A84> /System/Library/PrivateFrameworks/HelpData.framework/Versions/A/HelpData
    0x7fff523be000 -     0x7fff523d8fff  com.apple.shortcut (2.16 - 117) <389381A8-F3EF-3143-AE06-1D91D0D57777> /System/Library/PrivateFrameworks/Shortcut.framework/Versions/A/Shortcut
    0x7fff523d9000 -     0x7fff5246bfff  com.apple.Symbolication (12.2 - 64541.7.1) <FA39B702-6E08-3F11-953F-5EC1EFB993BB> /System/Library/PrivateFrameworks/Symbolication.framework/Versions/A/Symbolication
    0x7fff5915f000 -     0x7fff5917afff  libJapaneseConverter.dylib (90) <78F1A09D-07FD-34B0-8011-2ED89520133E> /System/Library/CoreServices/Encodings/libJapaneseConverter.dylib
    0x7fff5f045000 -     0x7fff5fa58fff  libSC.dylib (4.2.15) <86667FD2-E9BB-39FE-82E9-7B1F0230A922> /System/Library/Extensions/AMDShared.bundle/Contents/PlugIns/libSC.dylib
    0x7fff6a56a000 -     0x7fff6a56efff  libmetal_timestamp.dylib (31001.161) <DF0A6F36-E486-3656-A6F2-9BA9A0CF2159> /System/Library/PrivateFrameworks/GPUCompiler.framework/Versions/31001/Libraries/libmetal_timestamp.dylib
    0x7fff6c9d8000 -     0x7fff6c9defff  libCoreFSCache.dylib (177.22) <44489BD1-3963-35DF-86F1-DE95778AC0DB> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libCoreFSCache.dylib
    0x7fff6c9df000 -     0x7fff6c9e3fff  libCoreVMClient.dylib (177.22) <989F6CBF-CCEF-340D-9CB5-EC4133707040> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libCoreVMClient.dylib
    0x7fff6c9e4000 -     0x7fff6c9f3fff  com.apple.opengl (18.1.1 - 18.1.1) <F70AF1B3-D17A-3A0E-A8AC-9D45C5B52BA9> /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL
    0x7fff6c9f4000 -     0x7fff6c9f6fff  libCVMSPluginSupport.dylib (18.1.1) <AF77D964-9A4C-3690-AF62-4E05825DC9BF> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libCVMSPluginSupport.dylib
    0x7fff6c9f7000 -     0x7fff6c9fffff  libGFXShared.dylib (18.1.1) <45A1FFDC-03B7-3D64-AFAF-16D321B53D28> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGFXShared.dylib
    0x7fff6ca00000 -     0x7fff6ca33fff  libGLImage.dylib (18.1.1) <16D10CE1-C2A1-3E24-A617-766CB6E9133C> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLImage.dylib
    0x7fff6ca34000 -     0x7fff6ca70fff  libGLU.dylib (18.1.1) <F0DD35B5-3692-3BE5-AD3D-4F6B237EF6AD> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLU.dylib
    0x7fff6ca71000 -     0x7fff6cc05fff  libGLProgrammability.dylib (18.1.1) <F8A8DACC-1932-3DEF-A269-396E4981B4D0> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLProgrammability.dylib
    0x7fff6cc06000 -     0x7fff6cc10fff  libGL.dylib (18.1.1) <68ABAADE-2DB4-3412-9F36-CA1AEAC8E9F6> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib
    0x7fff6cc11000 -     0x7fff6cd8cfff  GLEngine (18.1.1) <2C9F1F38-F0CA-3416-9A6E-C0E3F40C3AAC> /System/Library/Frameworks/OpenGL.framework/Versions/A/Resources/GLEngine.bundle/GLEngine
    0x7fff6cd8d000 -     0x7fff6cdb6fff  GLRendererFloat (18.1.1) <A66AB383-EE4C-325C-8115-78F2B3FFECC7> /System/Library/Frameworks/OpenGL.framework/Versions/A/Resources/GLRendererFloat.bundle/GLRendererFloat
    0x7fff6e047000 -     0x7fff6e09ffff  com.apple.opencl (4.5 - 4.5) <40B70A3B-D981-3E4A-9BEC-F22EF84118F5> /System/Library/Frameworks/OpenCL.framework/Versions/A/OpenCL
    0x7fff6e0a0000 -     0x7fff6e0a8fff  libcldcpuengine.dylib (2.19) <7918D299-C617-37E7-8B61-8D9FBA4921B7> /System/Library/Frameworks/OpenCL.framework/Versions/A/Libraries/libcldcpuengine.dylib
    0x7fff6efc2000 -     0x7fff6f011fff  ATIRadeonX6000SCLib.dylib (4.2.15) <E3B416D3-3876-3218-A68F-A745B103F160> /System/Library/Extensions/AMDRadeonX6000GLDriver.bundle/Contents/MacOS/ATIRadeonX6000SCLib.dylib
    0x7fff6f11e000 -     0x7fff6f125fff  com.apple.agl (3.3.4 - AGL-3.3.3) <25240534-44D6-3350-9C56-0D0CEAC3830B> /System/Library/Frameworks/AGL.framework/Versions/A/AGL
    0x7fff7820c000 -     0x7fff78213fff  libRosetta.dylib (203.30) <44C477D9-013F-3A6D-A9FE-68A89214E6A5> /usr/lib/libRosetta.dylib

External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 6384
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=852.9M resident=0K(0%) swapped_out_or_unallocated=852.9M(100%)
Writable regions: Total=539.0M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=539.0M(100%)

                                VIRTUAL   REGION
REGION TYPE                        SIZE    COUNT (non-coalesced)
===========                     =======  =======
Accelerate framework               640K        5
Activity Tracing                   256K        1
CG backing stores                 5760K        6
CG image                          4180K      107
CG raster data                     152K       18
CoreAnimation                    198.8M      104
CoreGraphics                        12K        2
CoreImage                          160K       13
CoreUI image data                 2516K       22
Dispatch continuations            96.0M        1
Foundation                          16K        1
Kernel Alloc Once                    8K        1
MALLOC                           144.0M      218
MALLOC guard page                   32K        7
OpenGL GLSL                        256K        3
STACK GUARD                       56.2M       46
Stack                             31.9M       46
VM_ALLOCATE                        1.1G      148
VM_ALLOCATE (reserved)             308K        1         reserved VM address space (unallocated)
__CTF                               759        1
__DATA                            29.3M      376
__DATA_CONST                      19.5M      217
__DATA_DIRTY                       920K      126
__FONT_DATA                          4K        1
__GLSLBUILTINS                    5176K        1
__LINKEDIT                       499.4M       15
__OBJC_RO                         60.5M        1
__OBJC_RW                         2449K        2
__TEXT                           353.6M      374
__UNICODE                          588K        1
mapped file                      283.8M       35
shared memory                       40K        4
===========                     =======  =======
TOTAL                              2.8G     1904
TOTAL, minus reserved VM space     2.8G     1904

Model: iMac20,1, BootROM 1554.80.3.0.0 (iBridge: 18.16.14347.0.0,0), 6 processors, 6-Core Intel Core i5, 3.3 GHz, 16 GB, SMC
Graphics: kHW_AMDRadeonPro5300Item, AMD Radeon Pro 5300, spdisplays_pcie_device, 4 GB

Wings3D Clash Log
Code:
Dump written 2021-5-12_12-48
Version: 2.2.7
Window: {autouv,{segment,1}}
Reason: {case_clause,{edge,4845,3962,4951,2079,4951,2086,4845,3969}}

Stack trace:
[{wings_vertex,until,8,[{file,"wings_vertex.erl"},{line,91}]},
{wings_vertex,force_connect,4,[{file,"wings_vertex.erl"},{line,647}]},
{auv_segment,connect_edges,2,[{file,"auv_segment.erl"},{line,840}]},
{auv_segment,cut_edges_1,4,[{file,"auv_segment.erl"},{line,797}]},
{auv_segment,cut_one_chart,3,[{file,"auv_segment.erl"},{line,713}]},
{auv_segment,cut_model_1,5,[{file,"auv_segment.erl"},{line,704}]},
{auv_seg_ui,seg_map_charts,2,[{file,"auv_seg_ui.erl"},{line,369}]},
{wings_wm,handle_event,3,[{file,"wings_wm.erl"},{line,1031}]},
{wings_wm,send_event,2,[{file,"wings_wm.erl"},{line,998}]},
{wings_wm,do_dispatch,2,[{file,"wings_wm.erl"},{line,890}]},
{wings_wm,dispatch_event,1,[{file,"wings_wm.erl"},{line,799}]},
{wings_wm,get_and_dispatch,0,[{file,"wings_wm.erl"},{line,685}]},
{wings,init_part2,3,[{file,"wings.erl"},{line,108}]},
{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,226}]}]

OS: macOS Version 10.16 (Build 20D91)
GPU: ATI Technologies Inc. | AMD Radeon Pro 5300 OpenGL Engine