For the sake of people searching, or if the image gets removed on day, here is the error message as text:
"Sorry, an error has occured. The application cannot be installed due to a certificate problem. The certificate does not match the installed application certificate, does not support application upgrades, or is invalid. Please contact the application author."
I keep getting the above error when trying to install a new .air desktop file on a third-party Mac over which I have limited control. The .air app does work on Windows 8.1.
-Do you think it could be the AIR runtime (currently version 14, and am getting admin to update it to version 16)? I built the app in AIR 16.
-There is a previous version of the app, with a different certificate that is already installed. Would this possibly cause the error?
-Finally, I signed the app with a self-created certificate for development reasons. Is that likely to be a problem, it didn't seem to be an issue last time I did this?
Thank you.