Just opened up a CC2015 document that I'd originally done in CS6. Got the attached error message.
I'd just installed a Font Agent Pro plugin update for 2015 and wonder if this has anything to do with it.
My guess is that Font Agent Pro is not compatible with CC 2015. Try turning it off if you're working with Typekit fonts.
Au contraire Steve… FAP for CC2015 was just released and has been working great, save for this anomaly.
Retrieving data ...