This one is strange. Whenever I have Paint Shop Pro (7) running in the background, and start up ZQuest, it ALWAYS crashes (PSP), and then ZQuest proceeds to display wierd color palettes for everything. Every time. Not sure what exactly is goin' on there..
Wierd Paint Shop Pro Bug
I would have something similar to that problem whenever I alt-tab out of ZQuest whenever I am running Live365, except the bottom area would turn a disgusting dark green and dark blue combination and so would the menus, and it kept trying to be the only way to fix that is to stop using Winamp/Live365.
It does the same thing with PSP5 and 6 for me.
I dunno what's going on, but I've had similar problems. Seems like back before we could window ZC, and I hacked it to make it windowed, the only time it ever crashed was when I was running PSP in the background.
I think other programs affect it too.. sometimes my menu bar at the top goes completely black for no reason.. I havn't really figured out what's doing it but it could be Outlook Express..