Hello, I've been visiting this site for almost two years now since I got my N900. It's the first time, however, I've posted anything so have mercy... I have the same problem as mentioned above. After updating CSSU I get the same "FATAL ERROR" and can't open the configuration application. I uninstalled Theme Customizer as it was causing problems (that's what I understood form the posts) but I still can't open it. Unfortunately I have no idea how to do this "transitions.ini" so I would be grateful if somebody could write some kind of guide for dummies how to solve this problem step by step. Thanks in advance.