Can't burn CDs

All of a sudden I can’t burn CDs. What happens is you open the dialog, insert the disk, it recognises it’s there, does the quick check then closes the dialogue. And also drops back to Finder (I’m on a Mac). I just burned a CD no problem from iTuines so it looks like Wave lab is the culprit. Any ideas? I’m on W Elements 9 on Mac Mini.

Interestingly it burns fine from W8.