If you place any wall at the very edge of the western base zone in Storskogen, the game crashes and causes the savegame to be permanently corrupted (game crashes immediately upon start afterwards). Only solution is to restore a savegame from manual backup.
Steps To Reproduce:
Place any wall at the very edge of the western base zone in Storskogen. Now the crash can be triggered in 2 ways: Either by deconstructing the wall, or by exiting to main menu. Both actions result in the game crashing, and savegame corruption, and the game is unable to start again unless savegame is restored manually.
Host or Client:
Host - single player.
WARNING: DO not try to reproduce, unless you have manually backed up your savegame first.