For me it was working the game since rev 530 ( and i was updating every single time ( Compiling myself or using the ones posted here on the forum )

The game only crashed 2 times ( 1 right when entering Yogi park at start , and in the end before floor 666 ) and both were random crashes

Some people advice to turn MGTS off , but losing too much FPS and playing through the entire game 2 times , i can say it does work nicely with MTGS on , SSE2 Gsdx and under 2880x1800 "internal res ), Dx10 on vista 64 ( 90% running at 60FPS , except on a few battles ) - no speed hacks at all

Beside might be the ssse3 plugin , try with the sse2