Messages funktioniert GAR NICHT MEHR... Hilfe!!!

Question

Es geht nix mehr. Es können keine Konversationen gestartet werden. Wenn man Text eingegeben hat und abschickt bleibt die Konversation leer. Auch alle bestehenden Chatverläufe sind leer. Neustart von Messages und auch des kompletten Mountain Lion OS hat nix gebracht. Weiss jemand was da los ist???? Ätzend echt....

Answer 1

HI,
So in Messages > Preferences > Accounts only the iMessage and Bonjour one are listed and the iMessages one has the "Enable this Account" ticked.
In the Main Messages window you can select a Contact and it lists their iMessages contact info (Click their name to see the drop down of Options) and it is marked as an iMessage contact.
However once you select an iMessages contact and the text field lists it as an iMessage conversation any Text you enter is not sent.
Is the name that is now in the "To" spot blue or red ?
Blue tends to mean the person is contactable and the red tends to mean they are not.
The pic below shows one "name" linked to a valid iPhone number (blue) and also a number of the address card fro my G4 computer (red) which is not valid (Messages just thinks it is a possible).
It is very difficult to tell from within the Messages app whether it is actually Logged in or not.
Do you have an iPhone and can you send to the iPhone from the Mac or From the iPhone to the Mac ?
8:09 PM      Wednesday; June 19, 2013
  iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.4)
 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