When I remember correctly there were two Problems
- My Unreal Engine installation was corrupted (and still is, but you have to install a clean version and yea
) - (The Fix) I had a converted (ue4 → 5) 5.1 project which was corrupted and I could not fix it. BUT you can simply create a new empty 5.1 Project, activate the same plugins and duplicate the /content/ AND /config/ folder to the new empty 5.1 project
Since the new empty 5.1 project was working fine and had no problems, i copied my game over and here we go - now everything is working fine