Emu XL-7 & MP-7 User's Group

Hi all, possible bug alert.  I have my mp-7 midi to mt triton classic 
and I have the 1.32 os upgrade, the problem is this as a am playing 
the pads on the mp the mp freezes and there is a high pitch sound 
that comes from the triton outputs and when i pull out the in midi 
cable from the triton the sound disappers. can someone help please.  
thank you