Homebrew Quake 2 DS corupption

[wolfmanz51]

Hi There seems to be a problem with Quake2 for the DS The program corrupts my sd card when I save. Its a great program but unusable until this is fixed and Ive tried to contact Simon hall the maker of Quake 2 DS and no luck. So I was wondering if anyone could help me fix his program or contact him
Heres the source.