Musescore 2.0 Beta

Ever since on [.xml] file couldn't load on [Musescore 2.0], it doesn't respond anymore. Ive tried uninstalling it and re-installing it, but that doesn't seem to work. It keeps asking if I would like to resume my previous session and if I click any of the options, that window dissappears and leaves me with a blank [Musescore 2.0 program] opened and not responding. It wont even close properly. I have to use [task manager] to close it. I bassically cant use it anymore, or until this problem could be fixed.