in r80.2 and r81 a buttonfamily seems to don't work as aspected:
i have two families - one with Buttons and one with Sprites
<img src="http://dl.dropbox.com/u/31151399/Construct2/problems/buttonFamily/buttonFamilyProblem.png" border="0">
in online action
--> The button family doesn't show any reaction. When I create instances of one Button-object then it works fine for all instances but not for a family of different button objects.