Before to call an exorcist I will ask you :
I have sometime problems about no worky commands ( rest() moveTo() or autodetach if velocity =-1 )
Problems ocure often at startup.
This is the smallest thing I can use to isolate. When I launch rest() , slider in swing go to the asked position, but no action on servo or virtual servo. ( like the servo is disabled, but servo is electrised)
and if I move the slider a little degree, servo go to good position.