>Dragan,
>
>>If anyone knows this, let me know too before I spend too much time debugging.
>
>I do not know crap, but, as a wild -late hour- guess, and reading that you mentioned that you have the problem with just one form, I would check that form's ScaleMode property

Nah, that'd be too easy. My last foxels form was written somewhere in 1997 or so, and I switched to pixels long ago. Actually, I don't know if anyone ever used foxels for anything serious.

Besides, there are a couple of forms where it works almost always. Almost.

Worse, can't trap the error. I tried to override the event code by placing a oNode=dodefault(twX, twY), but it errors out _before_ getting there.

Update: someone did seem to have a similar problem once. Message #882618 may shed some light - not to me, though. The problem seems sufficiently different from mine. I'm mentioning it just in case it rings anybody's bells.