ImporError with 'Hello World' example from Panda3d

I just finished installing Panda3d on my Mac, a 3d Python game engine, but when I try to run the hello world example with

ppython helloworld.py

I get an issue:

Traceback (most recent call last):
  File "helloworld.py", line 1, in <module>
    from direct.showbase.ShoHewBase import ShowBase
  File "dstroot/pythoncode/Developer/Panda3D/lib/direct/showbase/ShowBase.py", line 10, in <module>
  File "/Developer/Panda3D/lib/pandac/PandaModules.py", line 8, in <module>
    from libpandaModules import *
  File "/Developer/Panda3D/lib/pandac/libpandaModules.py", line 2, in <module>
    Dtool_PreloadDLL("libpanda")
  File "/Developer/Panda3D/lib/pandac/extension_native_helpers.py", line 79, in Dtool_PreloadDLL
    imp.load_dynamic(module, pathname)
ImportError: dlopen(/Developer/Panda3D/lib/libpanda.dylib, 2): Library not loaded: @executable_path/../Frameworks/Cg.framework/Cg
  Referenced from: /Developer/Panda3D/lib/libpanda.dylib
  Reason: image not found

Im assuming that my installation of the engine went wrong, and I am missing the some part of the engine, but I am not really sure how to deal with this issue. I would really appreciate any help. Thanks.

Solution

Per the "Troubleshooting" section of the Panda3D Getting-Started page, you probably need to install the Nvidia Cg toolkit.