THERE HAS BEEN A DATABASE ERROR
Please Contact Support If this error persists.
1021 - Disk full (/tmp/#sql_16ed_0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Hmm.. this is making me think your sql server doesn't have enough space for queries to run correctly. I can't imagine marginbot making any queries that would cause this though, all the marginbot tables are relatively tiny. Are you running something else on this server that does a lot of work on your MySQL server?