[Zope] error calling Zope.app()

When I call Zope.app() I get a traceback saying from Products.PythonScripts.PythonScript import PythonScript ImportError: Mo module named PythonScripts.PythonScript what does this mean? Under Products I have the dir PythonScripts and it has the module PythonScript. In the debugger... I can call import Products right before the fatal line. But I cant import any Product itself. Mathew