[fixed] Wings_crash.dump - function_clause

[Hank]

Hello,

Since this issue appear randomly during my work with W3D I can't describe all steps to get it back.
I'm not sure if Tweak palette has anything with it but I have it turned on all the time.
I noticed that after some time repeat function (+d) does not work: when pressed it goes off after 0,1 sec. - just like refresh option working on/off all the time. I have to close W3D and load project once again.
Additionally, now I can't even save my project, got error:

Dump written 2017-5-30_8-43
Version: 2.1.5
Window: geom
Reason: function_clause

Short stack trace:
[]

Long stack trace:
[{gb_trees,get_1,[-16949,nil],[{file,"gb_trees.erl"},{line,243}]},
{wings_we,'-do_renumber/3-lc$^0/1-0-',2,
[{file,"c:/Users/familjen/src/wings/src/wings_we.erl"},{line,678}]},
{wings_we,do_renumber,3,
[{file,"c:/Users/familjen/src/wings/src/wings_we.erl"},{line,678}]},
{wings_we,do_renumber,2,
[{file,"c:/Users/familjen/src/wings/src/wings_we.erl"},{line,643}]},
{wings_we,renumber,2,
[{file,"c:/Users/familjen/src/wings/src/wings_we.erl"},{line,258}]},
{wings_ff_wings,renumber,5,
[{file,"c:/Users/familjen/src/wings/src/wings_ff_wings.erl"},
{line,1314}]},
{wings_ff_wings,export,2,
[{file,"c:/Users/familjen/src/wings/src/wings_ff_wings.erl"},
{line,1251}]},
{wings_file,save_now,2,
[{file,"c:/Users/familjen/src/wings/src/wings_file.erl"},
{line,430}]},
{wings_develop,time_command,2,
[{file,"c:/Users/familjen/src/wings/src/wings_develop.erl"},
{line,73}]},
{wings,raw_command,4,
[{file,"c:/Users/familjen/src/wings/src/wings.erl"},{line,621}]},
{wings_wm,handle_event,3,
[{file,"f:/unixlike/src/wings/src/wings_wm.erl"},{line,957}]},
{wings_wm,send_event,2,
[{file,"f:/unixlike/src/wings/src/wings_wm.erl"},{line,923}]},
{wings_wm,do_dispatch,2,
[{file,"f:/unixlike/src/wings/src/wings_wm.erl"},{line,829}]},
{wings_wm,dispatch_event,1,
[{file,"f:/unixlike/src/wings/src/wings_wm.erl"},{line,730}]},
{wings_wm,get_and_dispatch,0,
[{file,"f:/unixlike/src/wings/src/wings_wm.erl"},{line,650}]},
{wings,init,1,
[{file,"c:/Users/familjen/src/wings/src/wings.erl"},{line,147}]}]

W3D file can't be saved (Delete HotKey window pop-up) and what's the best: original W3D file is deleted. So, if I had only one version of my last save, now can't get any
The only workaround is save as export file.
I just wonder why crash.dump file has path: c:/Users/familjen/src/wings or f:/unixlike/src/wings/src which is not related with my computer.

Could anyone take a look at it?
Thanks.

BR, Hank