setup of Pyramid on Google App Engine

Following these steps produces the following开发者_StackOverflow:

$ python2.5 ../appengine-monkey/appengine-homedir.py --gae $GAE_PATH pyramidapp
New python executable in pyramidapp/bin/python2.5
Also creating executable in pyramidapp/bin/python
ERROR: The executable pyramidapp/bin/python2.5 is not functioning
ERROR: It thinks sys.prefix is '/System/Library/Frameworks/Python.framework/Versions/2.5' (should be '/Users/lostdorje/Development/workspace/pyramidapp')
ERROR: virtualenv is not compatible with this system or executable

I see some others are having similar problems.

Any thoughts?

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I wrote a Pyramid on Google App Engine example. Its based on zc.buildout and on the tutorial mentioned in the question, but it is running with Pyramid 1.4 and some helper recipes.