Deluxe update was wrong version
This is just a heads-up in case it happens to other folks, so they know they are not alone. Today I clicked on the "update available" button in my Quicken Deluxe and the update it installed was the "Home, Business and Rental Property" version. What a headache. Couldn't open Quicken. My backups were rendered incompatible. I spent over an hour cleaning it all up, uninstalling, cleaning the registry, downloading the appropriate file from my account page on the Quicken website. I'm still a big fan of Quicken and what the new ownership has done and is doing, but this glitch was a pain. FYI.