Please read this post and come back with details, as listed in the linked to post, of your computer specification, Music Maker variant and version number, and any other relevant information eg what changed on your computer between Music Maker working and not working.
Nothing changed on my computer. you guys started releasing versions that crash. I have version 28.0.3.51
exporting music no longer works and automatic mastering crashes. if you want me to post a picture every time it crashes let me know so i can post dozens of times. I have the newest of version of windows.
Nothing changed on my computer. you guys started releasing versions that crash. I have version 28.0.3.51
I have the same version and it works for me. Even if you think nothing changed on your computer it could be very possible that, if you use Windows 10, Windows installed an update without you noticing it and disabled or changed some functionality that this MM version needs to work correctly.