Use the new optional argument to endRequest in the middleware Currently endRequest is called twice on an exception if Django intercepts the exception and returns it's own result. By setting optional=True we do not crash on 'assert self.in_request'.

import gae_django
import app_profiler.app_profiler

def main():
   app_profiler.app_profiler.main()

if __name__ == '__main__':
   main()