Compass calibration problems

hi everybody,
i have installed ardusub on px4, during my first start, the qground let me to calibrate compass sensor, i following the instruction to rotate the rov at random direction, but it come out tether information and the compass calibrate stop and process bar does not going on , i do not know what’s matter with this, anybody can give some advice will be apprecicated, thanks a lot.

no one has encountered this problems ???

me i have the same problem, but with accelerometer calibration, how have you solved this issue? During calibration which autopilot orientation must be selected? My rov has a basic rov frame 3 or 4 thrust, i would like start with 3 thrust engine and if all works fine upgrade to a power version.