OSX Mountain Lion "Messages" will not let me sign in...

I cannot for the life of me get messages to work on the new OSX mountain lion.  I keep getting this alert when trying to sign in:
"COULD NOT SIGN INTO iMESSAGE. The server encountered an error processing registration.  Please try again later."
Any ideas?  I have restarted both my macbook and macpro, reset my apple ID password... no love.

I have spent over 40 hour walking through this issue with Apple senior tier engineering support with Apple for Mountain Lion and Developer support, plus the Apple store genius bar and their high level connection, Getting no where trying to resolve same issue it seems.  The only thing I can get to work is AIM to video chat or share screens.  Messages accounts have added 5 other account .mac accounts and I can not sign into any of them or remove any of them either.  Over time I have had a .mac address that was made into a mobile me address that was then converted into a .mac email again and became a cloud account. And I have a developer account that has a separate name that works with iTunes connect.  When I try to manage accounts to change the password of one it corrupts the the password of the other. When I try the change emails of one it says it is in use by the other.
There are 2 accounts for the iTunes and App Store. 
Messages is choking on my 2 accounts and there is a definite unresolved problem with the cloud in regard to them it seems.

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