i cannot chat using windows live, i keep getting a weird number and letter code and i cant read what the other person says

because of the mandatory download of windows live essentials, i was forced to use this new one
but i have a big problem
when i open a chat with someone a code appears in my chat box and at the top of hte conversation 684fa738-bb4c-11e1-a07a-485b392256e9
i cant see what they are saying at all unless i  open message history and wheni send the a message these numbers and letters appear, if i dont type fast enough my message gets deleted before i can send. i tried uninstalling and reinstalling and updating my computer but nothing is working and its so annoying . i cant even use messenger anymore :( please help me resolve this issue