Access Violation in Event Manager
From BulletProof Wiki
We've seen this happen on hour-increments under certain hardware/software configurations. It appears to be something in the Event Manager, but we haven't really been able to nail it down due to the infrequency of the error. There is a BETA version available for BulletProof FTP Server, but you may still have a problem. In our next major release there is a complete rewrite of the engine which should fix the problem.

