When I try to burn images to a CD/DVD, I get the following error message: Unable to Export - Disc burning is not supported by Lightroom on this computer.
I have a new MacBookPro running Sierra 10.12.5 and the latest version of Lightroom CC.
I tried that when I read your response. Now I think the problem is with Apple and my optical drive. Images burned on CDs on my old MacBookPro could not be imported into Lightroom from using this new computer. This is an Apple problem. Thanks for the suggestion.