Hi Jonathan,
I had gone through several endless loops of "your extension manager needs to be updated" and then infinite hourglass state, and a few other catch-22 scenarios. I ended up deleting the extension manager (which appeared to be only for CS6) and also the panel (which always tried to update but hung).
Now there appears to be no in-app method in Illustrator for getting to the add-ins at Adobe. Is this correct?
Thanks,
Allen