[curt.clifton]

It looks like DropBox corrupted your database. That transaction identifier reads like the name of a file created by DropBox when changes were made to copies on multiple machines between syncs. Syncing via DropBox is not supported in OF; search the forum for recent discussions as to why.

If you have a corrupted database, then turning off sync still leaves you with a corrupted database. I'm with Lucas, contact the support ninjas and they should be able to straighten out the problem.