Did you submit a support ticket?
https://support.ootpdevelopments.com/portal/en/home
You said in the bug report forum that you were messing with the facegen pack and using the beta, any other changes made?
Did you try completely uninstalling/reinstalling?
Did you make sure that the game was completely removed before reinstalling?
There's an option in the game settings, under the Troubleshooting tab called "Force game data re-installation", you could try that.