I updated from Windows Live Mail 2011 to 2012.  Each category shows the number of names next to the category, but the category will not work for sending messages. The category shows as empty when used for emailing or when right-clicked to try Edit Category.  I created new categories, but they work only until the software is closed.  Then they are empty (except that they still show a number next to them).
I have been asked to create an email list for an organization. I have been told that there could be an issue with the number of names for sending out an email.   Can you advise if this is an issue with a "Group" in Hotmail?  I use Firefox in the event that information is needed.