When launching the game with the mod enabled, it displays a message to the effect of "greytile.png not found" and does not allow the game to start with the mod enabled even if it is the only mod enabled. I have tested this by itself to see if other mods were causing issues, but no, the mod itself can't find a specific file or texture within its own files.

I must have missed some setting names when I updated the graphics.
Try setting them to default next time you start up the game with it enabled. If it lets you start then just avoid using the greytile for now.
I'll work on fixing it this weekend.