We are aware of the issue affecting launching the game from Steam. This can be fixed by reinstalling the game and/or verifying game files by right clicking the game on Steam. The issue is caused by the protection we added for this season to mitigate problems with cheating. We are working on a proper fix, but in the meantime these steps can be used to temporarily fix the problem. Sincere apologies for those affected and thank you for your continued support.

We'll keep you updated when the situation changes.