I\'m following the directions provided by WebPutty\'s github page to put my own fork of WebPutty up on GAE. It runs fine locally. I wasn\'t able to run \"fab deploy\" successful
I had this exact same problem. I'm on Mac OS X Lion. I fixed the problem by moving the GoogleAppEngineLauncher.app from my desktop to the application directory. fabfile.py looks for the app there. After I moved the app to where fabfile.py was looking for it, I ran "fab deploy" and everything worked perfectly. I hope this helps.