[ignored] ver2.01 falls down by selecting Preferences

[Snishino]

Wings3d ver2.01(64bit and 32 bit) ends suddenly by selecting Edit|Preferences or clicking the icon of the Preferences on the geometry window with a mouse without any notice.
Therefore I can't know what is wrong in the Preferences.
I am now usually using ver1.54 and this phenomenon doesn't occur.
My Os windows 7 (64)SP1 OpenGL ver 4.1, Graphics INtel 4600, RAM 8Mb.
This version 2.01 may work except this problem, but I don't know well in details.
If ther is any informations about this problem, please inform me.
PS.
I checked the errors which occured by starting Wings3d ver2.01 with the DebugView of windows 7.
I found by this software about 60 errors occured when ver2.01 was started.
They were
[10764] Unknown accel modifier: ''ctrl'
[10764] Unrecognized accel key 'n'', accel string ignored.
[10764] Unknown accel modifier: ''ctrl'
[10764] Unrecognized accel key 'o'', accel string ignored.
[10764] Unknown accel modifier: ''ctrl'
[10764] Unrecognized accel key 'l'', accel string ignored.
....