Did iMessage beta on Lion finally stop working recently? I tried to send a message using the iMessage beta that I installed on Lion ages ago. The message didn't send, and then I noticed the prompt looked like this:



I tried to exit iMessage and restart it, but it wouldn't let me log in with the following message after entering my Apple ID:



Did Apple finally forcibly disable iMessage on Lion? Are there any solutions to using iMessage for me now? (I know I could upgrade to Mountain Lion, but I'm curious if there are any alternatives.)
Yes, Apple did disable Messages beta for Lion users.  French blogger from Consomac found the following in the French strings of the beta:


source http://consomac.fr/news-1339-messages-pas-sur-lion.html

Although this is not the exact error that you are receiving, inevitably it will ask you to move to Mountain Lion now that it has been released.  I encourage the upgrade, and if this problem recurs after you upgrade, try moving ~/Library/Preferences/com.apple.imservice.iMessage.plist to the desktop and restarting your computer.  You can If this does not work, move it back and edit your question accordingly.