08-07-2018, 03:43 PM 
	
	
	
		Hank said he doesn't uses Auto-Save enabled, so by using his preferences file I was also able to get the stack trace after a couple of tries:
But the log is still very similar.
	
	
	
	
Code:
Grabbed focus lost: {wx_ref,555,wxGLCanvas,[]} geom
Stack trace: [{wings_util,'-array_greatest_key/1-fun-0-',3,
                          [{file,"f:/unixlike/src/wings/src/wings_util.erl"},
                           {line,170}]},
              {array,sparse_foldr_3,6,[{file,"array.erl"},{line,1848}]},
              {array,sparse_foldr_2,8,[{file,"array.erl"},{line,1837}]},
              {wings_util,array_greatest_key,1,
                          [{file,"f:/unixlike/src/wings/src/wings_util.erl"},
                           {line,170}]},
              {wings_we,update_id_bounds,1,
                        [{file,"f:/unixlike/src/wings/src/wings_we.erl"},
                         {line,806}]},
              {wings_ff_wings,share_list_2,3,
                              [{file,"f:/unixlike/src/wings/src/wings_ff_wings.erl"},
                               {line,1008}]},
              {wings_ff_wings,import_objects,5,
                              [{file,"f:/unixlike/src/wings/src/wings_ff_wings.erl"},
                               {line,753}]},
              {wings_ff_wings,import_objects,3,
                              [{file,"f:/unixlike/src/wings/src/wings_ff_wings.erl"},
                               {line,721}]},
              {wings_ff_wings,import,2,
                              [{file,"f:/unixlike/src/wings/src/wings_ff_wings.erl"},
                               {line,28}]},
              {wings_file,'-confirmed_open/2-fun-0-',3,
                          [{file,"f:/unixlike/src/wings/src/wings_file.erl"},
                           {line,351}]},
              {wings_develop,time_command,2,
                             [{file,"f:/unixlike/src/wings/src/wings_develop.erl"},
                              {line,79}]},
              {wings,raw_command,4,
                     [{file,"f:/unixlike/src/wings/src/wings.erl"},
                      {line,625}]},
              {wings_wm,handle_event,3,
                        [{file,"f:/unixlike/src/wings/src/wings_wm.erl"},
                         {line,974}]},
              {wings_wm,send_event,2,
                        [{file,"f:/unixlike/src/wings/src/wings_wm.erl"},
                         {line,940}]},
              {wings_wm,do_dispatch,2,
                        [{file,"f:/unixlike/src/wings/src/wings_wm.erl"},
                         {line,841}]},
              {wings_wm,dispatch_event,1,
                        [{file,"f:/unixlike/src/wings/src/wings_wm.erl"},
                         {line,748}]},
              {wings_wm,get_and_dispatch,0,
                        [{file,"f:/unixlike/src/wings/src/wings_wm.erl"},
                         {line,651}]},
              {wings,init_part2,2,
                     [{file,"f:/unixlike/src/wings/src/wings.erl"},
                      {line,104}]},
              {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]
	
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