OK, this is whacky. Once updated on both Mac and Win:
On the Mac it tells me 27 of my products are in a collapsible category called Updates, While 3 of my remaining products are in a collapsible category called Installed.
I've hovered everywhere over any one of the "Updates" category and nothing happens. I've left the Installation Center open for hours and nothing updates or offer anything to click to actually update those products.
On Windows all products but two are in the collapsible category called Installed. Those other two are saying the libraries are missing.