I think there is a way to fix that but the starters bug isn't a big problem anyway, the rival have other pkms and not like those gym leaders, his pkms aren't the same type.
still got white screen... I did exactly what u said, clear rom or not.
btw, u said no need to save, but when i quit crystaltile2, it asked me something with yes/no option, and i couldn't quit it without pressing yes.
I can't use the starter mod, my no$gba keep warming errors
Bad Header Checksum
Bad ROM Entrypoint at Header
Bad Fixed Value 96h at Header
Also, I didn't see the Compression... option u mentioned, I chose Import... instead.