Itk - the [incr Tk] extension

The submitted demo does not segfault for me when
I make use of the current trunk of Itcl and Itk
and the iwidgets found here:

http://core.tcl.tk/iwidgets/index

which calls itself "iwidgets 4.1"

I take it this is not the same scenario where
you see the crash.

If the Itcl trunk can still be made to crash, I
am interested.  Please tell me where to find the
iwidgets 4.0.1 you used in your testing.  Thanks.