The Beast pack only adds new items in the General category, so it can only be selected from the Settings menu when editing any Season #2 character. We’ll add some notes on this to the store page to make it more clear.
The crash was a result of this, as the owned package shouldn’t have shown up in the menu, I’ll investigate this once I get back to my PC.
I’ve checked our backend and it shows that you own the Female Sorcerer pack, so should be able to use it. If you still can’t for any reason could you post a screenshot of your Female menu in the software, please?