Windows Live Mail: Group contact shows recipients in the group, when used in an e-mail, there are no recipients

I have a group listed under Contacts in Windows Live Mail (downloaded from Microsoft to my Windows 8 computer). The group shows eleven recipients. However, when I type the group contact into the "To" line in an e-mail, I'm told there are no recipients. When I click on the plus sign by the group contact to expand it, there are no recipients. I've tried adding the recipients again to the group, but it still shows no recipients in the e-mail. Any suggestions?