I had to post this to Outlook because Windows Live was not in the list of choices  If I am in the wrong place, please tell me how to get to Windows Live. 

I have set up three group contact lists.  When I go to Contacts and click on the group, all group addresses are there.  However, when I click Edit Category, no names are chosen and listed at the bottom.  As a result of this, when I try to send an email to the group, I get an error message telling me I must put an address in the To, CC or BCC.  I once again selected all email addresses for the group and was able to successfully send the email but as time went by, the names disappeared from the group again.  Help would be appreciated.