I checked Delpha forums and it said the following for Lua Game Content" error:
From my experience, it will show up with monitor issues, either real or made up by the game. Swapping video cables off the CPU will usually clear it on next reboot. You can also swap the monitor with another machine. You have to reset key the message; if you just reboot with the message up it'll always come back. I've never had the issue follow a monitor.
I had just swaped out the middle monitor before this happened. Did the above and game is up and running. Strange error as I have never seen it before.