I have a MacBookPro late 2016 with CS5 installed and it works fine. I get update notices from Adobe but none of the eight updates will install and I get the error message for each that says "There was an error downloading this update. Please quit and try again later." If I click on "Customer Support" on that box it says- "Upgrade Error The serial number is not for a qualifying product. The product listed is for Adobe Flash Pro CS4. I don't have that program installed and never have. Please help.