EXS 24 Logic Sampler Users Group

I got some strange behavior with my current project on Logic 4.7 with the
EXS24.

I got a snare sound which is a layer between two different sounds.
In Logic 4.7 this snaresound is lower in tune and seems to phase.
In fact it sounds totally different, but all the settings are the same as
befor.
Logic 4.61 plays the original snare.

Now i have to use 4.7 just for this one sound.

What`s happening ?

Unkas Gemmeker