X-Trap Error (Not listed on Fiesta forums)

[Melodic]

OS: Microsoft Windows XP, Media Center Edition, Version 2002, Service Pack 2

Processor Information/RAM Available: Uh, It just says this:

Hewlett-Packard Company
HP Pavilion
AMD Athlon(tm) 64 X2 Dual
Core Processor 5000+
2.40 GHz, 1.93 GB of RAM
Physical Address Extension

Graphics Information: HP f1905 flat panel monitor on NVIDIA GeForce 6150 LE

Every time I log onto Fiesta on Melodic, I get "Disconnected form the world server" and logged off. When I don't log into any characters but leave the screen on Character select in Epith, I get an X-Trap Error, 31-0400-00000000-102. Tried restarting, same thing happens. Any way I can fix it without reinstalling? Takes me four hours, I'm not putting up with that. I don't have enough time for it, anyway.