I'm having problems with a lot of ROMs in alpha 12. Most of the mario games don't work. Mario Advance is all garbled, Mario Advance 3 won't load, neither will Mario Advance 4. Wolfenstein won't load
I tried the built-in gba bios, and the official nintendo one. Neither worked....
I wonder how much can be wrong with your setup and/or files, given that I can properly launch every regional version of all the Mario Advances using either BIOS.
Some things to start:
a) Whether you dumped from a GBA, or downloaded from the Internet, your ROMs for these games, did the files get cut off mid-transfer to your computer or to your GCW Zero? (You can check this using file sizes.)
b) If you know about CRC32 values, did you compare the CRC32 values of your ROMs with those of known sources?
c) Did you compress the ROMs into ZIP archives?