For Where are the weres...

I've been having trouble with the Lycanthropy mod, the one with the necklace that is suppose to turn you into a werewolf, or a snake person if your a half-orc or half-orge. I've downloaded, and installed it in, but the first time I did this I went to the Dark magic shop in Tarant in the back of the magic shop, and she didn't have the option... I uninstalled it cause I thought it might of been installed wrong or something, and more recently, I reinstalled it... and the game crashes when I load it up... so again uninstalled.

Do I require a certain patch to get the lycanthropy mod to work correctly?