Answer Question
Apple security block
This may be known, but in case it isn't here is the issue. When trying to open an upgrade I'm given a message that the developer (Fluenz) is not an identified Mac developer. In order to open I have to change my security setting to allow an app from "anywhere". This lets me open the upgrade and open it again after resetting my security to "Mac app store and identified developers". Not a big issue but thought Fluenz might try to get on Apple's list of known developers.