UNSET breaks bound variables like GEAR, TARGET, etc. #2499
Description
To recreate:
- Have a savegame in which there is at least something in kerbin orbit already.
- Put a new vessel on launchpad with a kOS unit on it.
- While controlling that new vessel on launchpad, go to map view and use mouse to select a ship in orbit as target.
- In the terminal window of the new vessel, type UNSET TARGET.
It throws a NullRef, and from then on, SET TARGET will not work anymore, and any attempt to get at the "real" target fails.
(I have no idea if this is related to #2495 or not. It probably isn't but it could be.)