I had to repair XP and some of the programs need to be re-installed.
When trying to bring up TweetDeck, I'd get this message: "This application requires a version of Adobe AIR which cannot be found. Please download the latest version at . . ."
So, I did, and the Adobe site says it installs successfully, but the problem didn't go away.
Then I tried to uninstall AIR to do a fresh installation and the same error message comes up.
So, while the software appears to have updated correctly, it is unusable by other Windows programs/features.
I'd be interested in any help that you can provide.
Thank you for letting me know. I moved it.