Just upgraded from 2.0.8 to 2.5.2 and suddenly a transaction appeared. I'm sure it's a carry-over because the volume listed in the properties was removed from the policy and the server before the upgrade. I have tried to abort several times but it never goes away. I even recreated the volume and folder referenced in the transaction properties, but that didn't help.

Event type: 400
Action: Unknown status code: 0
Current Status: Unknown status code: 0
Last Attempt: None since Engine loaded.
Next Eligible Time: (blank)
Last Error: 0