For some reason, osu will work fine but then will give an error message that reads,"Unable to find a version of the runtime to run this application". I backed up my osu folder and reinstalled osu, but after I restored my backup, the updater opened and installed some files, and I got the error message after it closed. I'm unsure as to how to fix this, and I don't want to reinstall osu again in case the same thing happens.