Can't run gui apps on Mac OS X

[Phillip Tamulonis]

After successfully compiling GNUstep on Mac OS X, I am unable to run 
any gui apps due to the following error:

Gorm[532] NSApplication.m:221  Assertion failed in 
initialize_gnustep_backend.  Backend at path 
/usr/local/GNUstep/System/Library/Bundles/libgnustep-art.bundle doesn't 
contain the GSBackend class
/usr/local/GNUstep/System/Applications/Gorm.app/Gorm: Uncaught 
exception NSInternalInconsistencyException, reason: NSApplication.m:221 
 Assertion failed in initialize_gnustep_backend.  Backend at path 
/usr/local/GNUstep/System/Library/Bundles/libgnustep-art.bundle doesn't 
contain the GSBackend class

The error occurs irrespective of backend used or whether or not the 
backend is compiled as a library or a bundle.  Any pointers?

Thanks,

Phil T.