Multifying Files on a Mac

Hey, so I opened up Terminal and I attempted to multify a Toontown Phase file…

Heres what I inputted: multify -x -f

The result was this error:
dyld: Library not loaded: @executable_path/…/Frameworks/Cg.framework/Cg
Referenced from: /Developer/Panda3D/lib/libpanda.1.8.dylib
Reason: image not found
Trace/BPT trap: 5

Please help

Install the NVIDIA Cg framework.