Mavericks and AE 12.0/12.1/12.2

Since updating to Mavericks, AE CC no longer opens.

Creative Cloud claims AE CC is up to date.

I am also unable to install the 12.1 or 12.2 updates manually. It simplt says "Update failled - contact support if the problem persists"

Note: Premiere, Bridge, InDesign, Illustrator, Photoshop and Flash CC all appear to be working fine.