When I try to email one of my lists in Thunderbird, I'm getting this error message - '''Invalid Recipient Address''' Mens Group <"Mens Group"> <> is not a valid e-mail address because it is not of the form user@host. You must correct it before sending the e-mail. This is a '''LIST''', not an email address, what's going on? I've never had this problem before - it just started occurring. It looks like a bug to me. In 15 years of using Thunderbird, this has never happened before. Help please, thank you.