Hello Ted –
I have had this same issue since upgrading to Vegas 10. I assume it has something to do with hardware because a lot of people have no issues with burning CDs. I have three very similar computers running Vegas and they all have this problem.
I have posted on this forum and also on the Sony Vegas website and am still clueless to why this is happening.
The only trick that seems to helps, restart the program and do a ‘Save as’ right before you burn your CD.
Sorry I can’t be more help!
Jason