After spending HOURS on a project that thousands of people will see, I open up Movie Maker and EVERY SINGLE THING I HAVE PUT EFFORT IN WOULD NOT WORK. The file has the caution sign on every single frame. I don't think I can trust Windows because of this; erasing progress for absolutely no reason. I am going to tell people I know to uninstall Movie Maker because hard-worked projects decide to disappear for no reason. My laptop will allow nearly any app, so this isn't my laptop's fault. I regret trusting Movie Maker for my projects. I honestly do not care if this displeases anyone. I need my project, reply back for answers please.