flushEvents() problem

[Barry Levine]

I'm trying to trap for errant mouseUp events (like the user clicking 
twice on a button). I've added the following line of code to my scripts:
get flushEvents (mouseUp)

The result is that Rev crashes (v1.1.1 under MacOSX).
I then try replacing that line of code with:
put flushEvents (mouseUp) into trashVar

Same result: *boom*
Any advice would be appreciated.

Thanks,

Barry