you need to do this from an x-term rm -rf .witter* be VERY CAREFUL executing this command. there is NO SPACE between the .witter and the *. if you accidentally do rm -rf * or rm -rf .witter * then you will completely erase everything in your home folder. I take no responsibility for anything you do to your device. Run correctly that will remove everything that witter stores in terms of state, and when you start it again it will be effectively the 'first time' it thinks it's run. I would still be slightly surprised if this fixes segfault issues, though it might point the finger at image processing code.