problem with frequent crashes

i keep getting crashes with mupen 0.3 (using gln64 or rice's plugin) in both zelda games. ive made the tweak and recompiled as suggested in a previous thread and still no luck. compiling generated a hell of alot of warings though (although i think that just because im using gcc 3.3) any ideas? the roms i use are:

Legend of Zelda, The - Majora's Mask (E) (M4) [!]

and

Legend of Zelda, The - Ocarina of Time (U) (V1.0) [!]