[CLIENT] Item sets reset every time I log-in.

My item sets get reset every time I log-in. I logged in and all my item sets were gone so I looked at my preferences file and they weren't saved in there either. I created a test item set and logged off and logged back in and that was gone too.

I don't know how to reproduce this issue or how frequently it happens to other people.

EDIT: Tested making an Item set once more and still gets lost/deleted when I relog.