SRV turret registers as deactivated. Shows indication in Red. Will not fire. Changed between analysis and combat modes. Dismissed ship. Still will not fire. Also can't go into turret view. Everything seems to work in SRV Training mission though.
How do you change between modes in the srv? I couldn't figure it out in the settings. Had to get in the ship and switch t combat and then drop the srv.
As to your issue op, have you tried logging in and out yet? Could be (probably is) a bug.