MUI proggy crash. HELP!!! (FIXED!!)

Hello all. I was having trouble with a MUI application I compiled. (It took me 3 hours and 2 pots of coffee just to get something to compile) I wrote a program that just throws the GUI up, compiled it, and it works. Unfortunatly, when I go into the prefs editor, and try to change the window background, it gives me a software error, sometimes straight to a guru. I was wondering if anybody else has had this kind of issue, and knows how to fix it? Thanks for any help.

Found the prob. Somebody on aw.net told me about mui not liking the default 4k stack size. Simple enough fix. Bumped it to 8k, and it works fine.