Yamaha style size:

The PSR-2000, PSR-1000, PSR-2100, PSR-1100, and PSR-550 seem to have problems when a style is larger then 78 kb.

I have personally not found any limit with the newer instruments (although I agree with Jorgen, that there probably is one) and I have not heard of cases where the largest T2 styles will not load.

Regards,

Michael