I launched blender from the terminal (Mac OS X.2.2) after having seen similar suggestions for other platforms/OSs and here's what it spit out...

Code:

Traceback (most recent call last):   File "../modules/Converter/__init__.py", line 3, in ?   File "../modules/Converter/importloader.py", line 4, in ?   File "../modules/Converter/importer/__init__.py", line 8, in ?   File "../modules/Converter/importer/VRMLimporter.py", line 23, in ?   File "../modules/beta/Scenegraph.py", line 7, in ?   File "../modules/util/quat.py", line 10, in ? ImportError: Failure linking new module couldn't import 'importloader'

I attempted to import a VRML2 file. Blender gives it's usual 2 complaints "error loading... not a blender file" and that's it. No real explaination. I quit blender and this is what was in the terminal.

I hope this can help someone fix this problem so we mac users can benefit from this import. Thanks!