When using the /teleport_selected_to command on a ship that is currently in the gravity of a planet plate that is still attached to the core (an unexploded planet), upon the execution of the command, the server will crash. I have done this 4 times, I did not test it any more as the server is public.
If there is anything else that you need (server logs), contact Raiben or Zyrenica on the StarSide server.