There was an issue that affected users on Windows 8 or 10 where projects with sounds added from sources other than the Frames library would not export.
We have recently come out with a Frames update that should resolve this issue for many people using Windows 8 or Windows 10.
You can find the update here: http://www.tech4learning.com/download...
The new version is Frames 6.03
Be sure to save the installer to your computer before installing (do not run it from the web). Then, right-click the setup file and choose "Run as Administrator" from the list that appears.