Messages won't work with iMessage after Mountain Lion install

What do we do with the link?

Err,

It's an email link !!?? 😕

9:41 PM Sunday; September 30, 2012

Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

 iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Just FYI, this problem is easily resolved by a tech familiar with the iCloud support app. I had to call 4 times. Spent 3 hours on the line with 2 different senior techs who had me going through gymnastics. I even wiped my hard drive and did a clean install with 10.8.2, didn't fix it. Then I called back, spoke with a 1st level tech who knew about this support app, and he fixed the problem in 10 seconds, literally.

Hope this helps someone out there.

and the instant solution was what?

I had the same issue. I tried a lot of the stuff from above.

What ended up working for me was:

1) Changing my password

2) Removing all of the Alternative contact options (email addresses and phone numbers) through the Manage Your Apple ID web interface (https://appleid.apple.com/).

Seems like there might be a number of things that can cause this problem. Hopefully my solution works for some of you.

My issue was the following:

I could login to Messages on other systems (iMac, MacPro, iPad and iPhone) but not my MacBook Pro. This happend for me after installing the Mavericks Golden Master (The iMac also had Mavericks installed but didn't have the login problem). I could login to FaceTime on the MacBook Pro but I got the message "Your Apple ID ("email@domain.com") can't be used to set up iMessage at this time" when trying to sign into Messages.

solution!!!! thanks so much