Getting Frustrated With GP2X Emulation...!

[racketboy]

I've had this thing for like a year now and I've only gotten SNES and Genesis emulation working well.

MAME runs, but most of my games give me ROM load errors.
Street Fighter II CE is the only one that plays, but the ROM reboots before a match can start.
(and yes, I tested the ROMs out on my PC)

I can't get any NES emulator to run for the life of me. I always get some weird error in Spanish.

I'm following directions that come with the emulator.... what gives?