Pyinstaller - Error at runtime

[vanguard93]

Executing an application created with pyinstaller using PyUserInput results in the following runtime error on OSX:

Traceback (most recent call last):
  File "<string>", line 5, in <module>
  File "/Library/Python/2.7/site-packages/PyInstaller-2.1-py2.7.egg/PyInstaller/loader/pyi_importers.py", line 270, in load_module
    exec(bytecode, module.__dict__)
  File "path/build/server/out00-PYZ.pyz/pymouse", line 35, in <module>
  File "/Library/Python/2.7/site-packages/PyInstaller-2.1-py2.7.egg/PyInstaller/loader/pyi_importers.py", line 270, in load_module
    exec(bytecode, module.__dict__)
  File "path/build/server/out00-PYZ.pyz/pymouse.mac", line 16, in <module>
  File "/Library/Python/2.7/site-packages/PyInstaller-2.1-py2.7.egg/PyInstaller/loader/pyi_importers.py", line 270, in load_module
    exec(bytecode, module.__dict__)
  File "path/build/server/out00-PYZ.pyz/Quartz", line 6, in <module>
  File "/Library/Python/2.7/site-packages/PyInstaller-2.1-py2.7.egg/PyInstaller/loader/pyi_importers.py", line 270, in load_module
    exec(bytecode, module.__dict__)
  File "path/build/server/out00-PYZ.pyz/Quartz.CoreGraphics", line 9, in <module>
  File "/Library/Python/2.7/site-packages/PyInstaller-2.1-py2.7.egg/PyInstaller/loader/pyi_importers.py", line 270, in load_module
    exec(bytecode, module.__dict__)
  File "/path/build/server/out00-PYZ.pyz/CoreFoundation", line 19, in <module>
  File "path/build/server/out00-PYZ.pyz/objc._bridgesupport", line 121, in initFrameworkWrapper
  File "build/bdist.macosx-10.9-intel/egg/pkg_resources.py", line 925, in resource_exists
  File "build/bdist.macosx-10.9-intel/egg/pkg_resources.py", line 1352, in has_resource
  File "build/bdist.macosx-10.9-intel/egg/pkg_resources.py", line 1405, in _has
NotImplementedError: Can't perform this operation for unregistered loader type