Rotate Region causing crash

[tkbd]

I replaced the file and ,test.
Then I get a following error message.
(When I did the Region command,get error instantly, I could not dragging selection(s). )

Code:

wings_wm:821: Dropped Event autosaver: redraw
Using GPU shaders.
wpc_region:command/3: bad return value: {'EXIT',
                                         {undef,
                                          [{wings_drag,fold,
                                            [#Fun<wpc_region.3.95522133>,
                                             [angle],
                                             {st,
                                              {1,{1,{we,1,...},nil,nil}},
                                              face,true,
                                              [{1,{...}}],
                                              {0,nil},
                                              none,{...},...}],
                                            []},
                                           {wings_develop,time_command,2,
                                            [{file,"wings_develop.erl"},
                                             {line,73}]},
                                           {wings_plugin,command,3,
                                            [{file,"wings_plugin.erl"},
                                             {line,139}]},
                                           {wings,raw_command_1,3,
                                            [{file,"wings.erl"},{line,624}]},
                                           {wings,raw_command,4,
                                            [{file,"wings.erl"},{line,621}]},
                                           {wings_wm,handle_event,3,
                                            [{file,"wings_wm.erl"},
                                             {line,952}]},
                                           {wings_wm,send_event,2,
                                            [{file,"wings_wm.erl"},
                                             {line,918}]},
                                           {wings_wm,do_dispatch,2,
                                            [{file,[...]},{line,...}]},
                                           {wings_wm,dispatch_event,1,
                                            [{file,...},{...}]},
                                           {wings_wm,get_and_dispatch,0,
                                            [{...}|...]},
                                           {wings,init,1,[...]}]}}