I think this is a bug not a true warning... I'm rewritting the right properties panel (a very very very hard work) so the problem should be solved (I hope :-)) When you have this type of problem press the ESC key to avoid this.
Thanks Davide. I will do that. Strange thing is now this message doesn't seem to appear anymore and I haven't changed anything.
If it comes back I will try the escape button. I understand that rewriting this panel is a tough job. I don't understand how you can do it at all[2 H:)]
That kind of thing is waaaaay beyond my abbillities.
But still I wanted to say that you have done a great job with this program. I am so loving it (despite these minor issues which I am sure, you will solve:-))
I've almost completed the right property panel without using many and many controls but using a drawed list (made by me) that is very lighweight and very fast ;-) I've also created the Polygon shape ;-)