From Mavericks to Yosemite, current Aperture unavailable, "Purchased"not working

Updated from Mavericks to Yosemite, which made my current Aperture 3.5 unavailable, I went to the App Store, went to "Purchased" to update to 3.6 found Aperture and clicked update. I get a small spinning thing on the upper left, but there is no activity, I get a little spinner but it stops and looking at what is being downloaded I see very little activity from the app store.