I produced a beat. Then I saved it. At the next day I wanted to change some things on the beat. I opened magix music maker 2016 premium  and then I changed the things which I wanted to change. I was working and I don�t saved the new file because I wasn�t finished.  Then magix crashed and now I don�t know what to do because I don�t saved the file and the file is very important. What can I do ?