Problem opening .exe made from py2exe

Coding
1

I’ve used the setup.py code from this page, http://www.psychopy.org/recipes/appFromScript.html. However when I run the .exe I get this error.

File "psychopy_method.py", line1, in <module>
File "psychopy\visual\_init_.pyo", line 17 in <module> 
    from psychopy.visual.simpleimage import SimpleImageStim
File "psychopy\monitors\_init_.pyo", line 5, in <module>
File "psychopy\monitors\calibTools.pyo", line 10, in <module>
File "future\standard_library\_init_.pyo", line 457, in install_aliases
ImportError: No module named UserString