callback problem in v2.12

[hotspur1]

I've noticed with version 2.12 I can no longer change the callback function for a timer event without having Vizard crash on me. This was working fine in v2.11...

I have included a sample script (zip) using standard Vizard objects for you to try out. I've tried this on three separate computers with the same result.

Any workarounds or fixes...aside from having to rewrite programs?