Currently the mod seems to be just completely broken, as going either into character selection or creation will just immediately crash the game.

Already tried verifying files, disabling and re-enabling the mod, removing the mod file and reinstalling it, deleting/resetting the config file and even temporarily removed all saved characters to try and make a new one. The result is always the same.

EDIT: The error window that pops up shows: 'SystemIndexOutOfRangeException: Index was outside the bounds of the array.'

EDIT 2: After some more troubleshooting, I (somehow?) appear to have fixed the problem. I ended up deactivating all other mods, except the authentic races mod, and it didn't crash any more. Started re-activating each mod after the other, still worked fine again, all the way until I had my entire list re-enabled. Then I added back all my character saves one by one after taking them out from the folder, and no more crashing as well. So in the end I'm unsure what exactly caused the continuous crashing but doing this procedure appears to have fixed the problem in my case.