Sharing Calendar-Getting properties window not share to name
 

I am trying to share my calendar to someone in my group. When i click on
"Share my Calendar" the properties window opens instead of a windoe to get
the name of person to share to. I have shared my calendar to a number of
people already, but just had new people in my group and tried to share and
got this behavior. I also get the same behavior going from the drop down menu
and requesting sharing, it brings up the properties windoe.
Any help on this would be greatly appreceiated!!