When i upgraded Transmission to 1.30 i kept getting the error message "data not fully available". I think 1.30 became available last August 6. Rebooting, downgrading the transmission version, and a host of other first aid measures did not work. Today, transmission released version 1.31 which fixed the bug. If you get the same error message as i did, upgrade your version to 1.31. FYI.