Contact list lost in my Pc using Windows Live

Hello,
I have a strange problem here dudes...
If i connect myselft to web messenger i can see all my contacts without problems, but, when I´m trying to connect to the Messenger directly using my laptop I can´t.
I have been installing and reinstalling the software but the problem persist.
Someone can help me to resolve this mistery thing, I need a Hope now.

Thanks