DirectX Error! Game won't start!

[FoibleGamer]

After 13 hours of normal play, the game won't start and keeps giving me this message:
DirectX Error:
DirectX function "dxDevice->CreateHeap(&desc,FB_IID_PPV_ARGS(&heap))" failed with E_INVALIDARG ("An invalid parameter was passed to the returning function.").

Tried everything: Driver updates, reinstalling the driver, and lastly deleting the game and reinstalling, but still the same issue! Anyone has ideas?

[Mno]

Refund.