WoD character model haircuts cause game crash

Hey everyone, I've ticketed this issue to a GM prior but I was told to just install the WotLK character models. I downloaded the updated client from the website for the WoD character models, but whenever I go to the barbershop, some of the new styles look like a buzzcut when they should appear differently (according to some videos I havve watched), and then a select few just straight up crash the game and send me to the bug reporter. Has anyone else encountered this and found a solution? Thanks for reading!

Edit: To add, none of the new facial hairstyles make the game crash.