New Update bug V0.6.2

so I've been playing a lot after the update and I've encountered the same bugs over and over and over again. The only way to fix the problem is to restart the game.
Its very simple to encounter the bug, just mess around with the properties from grabbers, wheels and flying blocks then continuously start and stop the simulation. later you won't be able to build nor start again, and saving the machine also became a problem.

This would happen:

Here I cant edit the flying block: