Not really a bug, but since you've updated the renderer it requires DX11 at least, which makes it not playable on my hardware. Is there a chance for you to include both ways for the renderer to choose from, so it runs on older hardware as well?
I'm afraid that low-level rendering like DX11 is mostly governed by the engine I use (Unity). Let me check if it's in the export settings - what DX version and OS are you using?
