[racket] problem with choose language and submit bug report

Because DrRacket help/submit bug report does not function, I use this list
for the following report.
 
Welcome to DrRacket, version 5.0.99.5--2010-12-31(b2a297a/a) [3m].
Windows 7
 
'Choose language' and 'submit bug report' and some other menu selections of
DrRacket result in:
 
HTHEME->C: expected argument of type <non-null `HTHEME' pointer>; given #f
 
 === context ===
C:\Program Files\Racket-Full-5.0.99.5\collects\ffi\unsafe.rkt:1034:12
C:\Program Files\Racket-Full-5.0.99.5\collects\ffi\unsafe\alloc.rkt:24:9
C:\Program
Files\Racket-Full-5.0.99.5\collects\mred\private\wx\win32\canvas.rkt:76:3
C:\Program
Files\Racket-Full-5.0.99.5\collects\racket\private\class-internal.rkt:3529:0
: continue-make-super
C:\Program
Files\Racket-Full-5.0.99.5\collects\mred\private\wx\common\canvas-mixin.rkt:
115:2
C:\Program
Files\Racket-Full-5.0.99.5\collects\racket\private\class-internal.rkt:3529:0
: continue-make-super
C:\Program
Files\Racket-Full-5.0.99.5\collects\racket\private\class-internal.rkt:3529:0
: continue-make-super
C:\Program
Files\Racket-Full-5.0.99.5\collects\mred\private\wxwindow.rkt:15:6
C:\Program
Files\Racket-Full-5.0.99.5\collects\racket\private\class-internal.rkt:3529:0
: continue-make-super
C:\Program Files\Racket-Full-5.0.99.5\collects\mred\private\wxitem.rkt:35:6
C:\Program
Files\Racket-Full-5.0.99.5\collects\racket\private\class-internal.rkt:3529:0
: continue-make-super
C:\Program Files\Racket-Full-5.0.99.5\collects\mred\private\wxitem.rkt:203:4
C:\Program
Files\Racket-Full-5.0.99.5\collects\racket\private\class-internal.rkt:3529:0
: continue-make-super
C:\Program
Files\Racket-Full-5.0.99.5\collects\mred\private\wxcanvas.rkt:91:4
C:\Program
Files\Racket-Full-5.0.99.5\collects\racket\private\class-internal.rkt:3529:0
: continue-make-super
C:\Program
Files\Racket-Full-5.0.99.5\collects\racket\private\class-internal.rkt:3529:0
: continue-make-super
 
Happy new year to all.
Jos

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.racket-lang.org/users/archive/attachments/20110101/8fe296cd/attachment.html>