I am running Lion 10.8.4 and iMessage works on my iPhpone 4S, iPad 2 and MacBook 13", but I cannot get it to work on my 15" MacBook Pro (it use to). When signing in I get the message..."The server encountered an error processing registration. Please try again later." I have tried repeated over several week.
Anyone offer a solution?
MacBook Pro
Just had this same issue, back up your device if you need to probly a good idea, although I didnt and had no issues.
Close all apps
shut down your computer
restart while holding down the Option + Command + P + R all four buttons at once. Hold them down as your computer restarts, let it ding 4 times and then let them go. You may not need to let it go 4 times but what I read said to do that. This resets you PRAM.
Worked for me, everything works fine now.
Good luck!
Tried this twice...did not work and I get the same message, but thanks fo replying.
iMessage - Could not sign on
