Solved Instance 'X' already destroyed on application quit

I installed a hurtworld Server on a W2012 r2 Server, configured everythign and started the Server. Everything work fine so far. Then I tried to install oxide (copied and overwrite the files in hurtworld_data of the current oxide kit) and start the Server again. After that restart I get many Errors in the game log like
[Singleton] Instance 'LoadBalancer' already destroyed on application quit. Won't create again - returning null.
or
[Singleton] Instance 'GameManager' already destroyed on application quit. Won't create again - returning null.
or
.......

So the question now is, what did I do wrong?

 

Sounds like you didn't restart properly. That server sounds like it got halfway through quitting and stopped for some reason.