Hey, sorry you're having issues. I've looked into it and it seems to be that either your hardware doesn't support DirectX 11 or you need to update your video drivers.
If this isn't happening in other games it's probably the former and I have a new build that I just uploaded that *should* fix it.
I completely forgot that Unity dropped support for DirectX 9 and 10 and defaults to DX11 only so thanks for posting this.