SBL1360 random Motor stall

I have a SBL1360 controller driving a maxon EC-4pole brushless motor with a brake, I use RC via PWM for control input and a potentiometer for feedback. In my application the motor releases brake moves to a position in closed loop position tracking mode then switches to speed mode to allow the brake to come back on. This all works well except that the motor on occasion dose not restart (generally in a no load state) and the stall condition is indicated , I have found that this can be resolved by manually applying a bit of torque to the motor, or by doing a controller reset.
This bug occurs on average once in 30mins, and with much testing I cannot determine any obvious trigger for it.
In my application the unit is remote and is required to be active 100% of the time so doing live resets which take approx 2 secs is not a option.

Yes loop error detection is disabled

Yes I have tried every stall detection value including disabled,

I don't actually believe that it the stall error that's stopping it moving; I believe that it comes on as a consequence of it not moving. My only theory is that the hall sensors might occasionally stop in a difficult position for the motor to restart!

OK I will give that a try, it would be a improvement on the 2 seconds it takes to do a controller reset!
Is there any chance the the controller might crash or have an internal error which could cause this; I am still running the original firmware!

FID=Roboteq V1.4a SBLXXX 11/21/2014