Only appears on startup: http://pastebin.com/7Cu0C27C

cant find a schema version in my mysql?

Unknown column 'prefix' in 'field list' means you have 2 schema-version lines in your database, if I remember correctly. Remove one; keep the one which is schema-version: 1.

That would definitely be a problem then. Check your permissions.yml file for the proper formatting. For PEX 1.9+ it should follow this basic outline. If you're using PEX 2.x you'll need zml's help since I haven't used that version yet and don't know anything about it.

I'm guessing you found it. Problem solved?