I'm using developer preview of Yosemite for a while, now that Yosemite is released I want to have it installed on top of my Yosemite partition.
Clicking on "Download" in App Store Yosemite page, I see that I am prompted with an error note, saying :
Os X v10.10 is already installed on this computer. Use the Updates page to install the 10.10 update or if you would like to download the full OS X installer click Continue.
There's only two buttons; "Learn More" and "OK". OK does nothing, and there's no relevant update note regarding switching to full version of Yosemite so it's not rleevant neither.
How can I download full, final OS X Yosemite 10.10 release and install it on top of preview partition?