We've received reports of Vampire Mansion not running after the 1.3.0 update, This is not happening in our work environment, so we are having trouble resolving it. We've created a test version that rolls back the DirectX targeting changes that were made in version 1.3.0. If your game is currently not running, please go to Game→Properties→Beta→Join Beta, select "dx12 - DX12 Target Version", then update and see if the issue is resolved. We apologize for any inconvenience this may cause.