Explorer.exe crashes upon Launch
 

I've recently dowloaded Jazz2ed, and then the list server patch (the .exe file), and now explorer.exe crashes whenever I launch JJ2. It's kind of annoying, but it doesn't prevent me from doing anything. Strange, eh? I am 100% sure my PC is virus free. Anyone have an idea about what's going on?

My specs:

Windows XP Home Edition
512 Mb RAM
nVidia GeForceFX 5600 AGP (Meh, I want an ATI card)
Intel Pentium 4 Processor w/ 2.4 GHz
Jazz Jackrabbit 2 Version 1.23