OS: Windows NT 6.2 (Build: 9200)
CPU: GenuineIntel PentiumPro-class processor @ 3604 MHz with 2047MB RAM
Video: NVIDIA GeForce GTX 970 (9077)

UD3DRenderDevice::ChangeDrawingSurface->SetViewport() failed: D3DERR_INVALIDCALL

History: UD3DRenderDevice::ChangeDrawingSurface <- UD3DRenderDevice::HandleFullScreenEffects <- UGameEngine::Draw <- UWindowsViewport::Repaint <- UWindowsClient::Tick <- ClientTick <- UGameEngine::Tick <- UpdateWorld <- MainLoop