Fixing UE4 Fatal Error Crash

If you are seeing this error in OMD3 on Steam, please force the game to use DX11 (instead of DX12):

• Right click on Orcs Must Die! 3 in your Steam library
• Click on "Properties..."
• Under "General", find "LAUNCH OPTIONS" and in the text box below type "-dx11" 
• Close the dialog box and that should save the text you entered
• Relaunch OMD3