I am not sure what is happening here but some time yesterday PyCharm started giving me an error message about pydev debugger: warning: trying to add breakpoint to file that does not exist: blah/blah/blah.py (will have no effect)
This file is a file full of my app engine request handlers. I know the file exists because the handlers would respond to web requests.
Today that error went away but now pycharm is not stopping at breakpoints in the handlers.
Any ideas on how to solve this?