What is wrong with "zcybercomputing"?In that scenario it is not wise to run RC software... I hope at least you make backups and/or exports and store them on another computer.I had this problem going from v6.38.4 to 6.38.5 on the RB3011 also. Unfortunantly the router is one of my main routers, and I didn't have a spare so I couldn't debug.
One may decide to try RC software....Recover the device via netinstall and restore a backup requires no more than 10', and of course we, all, have backups and exports stored on another computer: in RB3011 partitions do not work...yes, it is suposed to work on v6.39.RC5X but no way to try it becuase leaves RB3011 unusable.
A RB3011 bought by the end of 2015, with historical debts (bridges, the announced desktop version with wireless, partitions, hardware encryption, ....)....from the "promissing" new ARM Mikrotik architecture that has never got additional devices launched.