rjcoy7: I managed to find a way to get the new race and class to appear in my game.
At first, the portaits and new race weren't available for selection. So, I tried the initial suggestion from the devs. I made a new game and exited it to the main menu. The portriats were then available and the character model was a tiefling, but the option to pick the race was missing.
I then exited the game and verified/repaired my GOG install of the game. When it was done, I checked and saw no tiefling available for character creation. I then loaded a save from an ongoing game and exited to the main menu. This time, the new race and class were available.
After closing and reopening the game, I found that the new race was again gone from character creation. However, if I load my old game and exit to the main menu, it's available again.
Clearly, it's still not working right, but maybe this will help someone get it going in the meantime.