Today at work I was asked to investigate a problem with contacts export from Hotmail.
It was working last month when i wrote the library. For my surprise it indeed was not working. I investigated a bit and i noticed that Microsoft has done some updates to their API. The scopes were changed ... and the permissions that comes with the scopes. Here is the line that bothered me
WL_Contacts.View - View information about a user and the user's friends, with the exception of email addresses.
They stripped the priviledge of obtaining contacts email addresses :(
What i have to do in order to get the e-mails back so i can use my exporter again ?
Do you have problems with your contacts importers ? If not, what are you using ? Which scopes ? Are you doing separate requests for each user ?
First of all, you can find tons of information about the new Windows Live Connect API here.
Here you can find version 5 of the API documentation.
If you want to sign up and create a Application you can do that here.
I hope this is enough to get you started (unless you've already found the provided links).