These apps have already been accepted
I reformatted my HD and had OS X Yosemite reinstalled. When I go to my "Purchases" page in the App Store I have a list of Apps to "Accept." However, when I click "Accept" and put my password in it tells me 'These apps have already been accepted" which is true. Under the list of 6 apps I have to accept it shows my purchases which includes those 6 apps. I can install and use them no problem. It is just a minor annoyance that whenever I look at the "Purchases" page I have this list of 6 apps it is telling me to accept, and there is no way to get this to go away.
MacBook Pro with Retina display, OS X Yosemite (10.10)