EXS 24 Logic Sampler Users Group

Hi everybody. I've upgraded my computer to Mac OSX 10.3.3 yesterday. 
And worked till morning without any problems. But when turned on the 
comp and ran logic pro today  the exs didn't load any sampler 
instruments. Other synths are working properly. I also reinstalled 
MacOSX 10.3.2 and tried it again. But the problem is the same. Any 
ideas will be appreciated Thanx in advance.
Ozgur Buldum