[Milhouse]

Now that's a strange one... I'd suggest changing line 666 to the following:

Code:

except lite.OperationalError as e:
      raise
      if str(e) == "database is locked" and self.RETRY <= self.RETRY_MAX:

and then paste here whatever the real error (stacktrace) is - it looks like the database is locked, although I only ever saw this error once and haven't been able to reproduce it so the "fix" (try again after a short delay) may need some tweaking...