Hello, I went back to my app https://www.pythonanywhere.com, just to discover it has not been working for at least a month.
Looking at the log :
2013-01-31 19:31:15,478 :Error from app: (<type 'exceptions.OSError'>, OSError(38, 'Function not implemented'), <traceback object at 0x7fc9c400ca70>)
The regex tester used a subprocess call to run the regex in a separate process than the main thread. So did you change the Python ability to run a subprocess on this hosting or is it something completly unrelated ?