So do we! In order to have any chance at all of helping you we need a lot more information. Please read this post and supply all the information requested. At the moment we know nothing about your computer, the version of Music Maker you are running and what, exactly, you have already tried! With this information we may be able to help you.
My MP3 Export is also not working. I run Win10 Spring ed, 7 gen i5 , 16GB Ram, 1010 nVidia and I bought the latest MM Prof ed 1 week ago. PS Mine is also EDM ed DS