Flask - Wsgi Process Keeps Crashing

I get strange errors when trying to deploy a Flask app (v0.8). I'm using apache's mod_wsgi, as suggested in the docs (almost to the letter). What's strange is that on some requests

Solution 1:

If you are getting Premature end of script headers, you are using daemon mode and the daemon process is crashing with a seg fault or similar.

Make sure you aren't still loading mod_python.

Also try setting:

WSGIApplicationGroup %{GLOBAL}

to work around issues with Python C extension modules which aren't safe for sub interpreters.

See:

http://code.google.com/p/modwsgi/wiki/ApplicationIssues

and look for various reasons for crashes listed.