I've reviewed and agreed (it shows up in member center). iTunes Connect says I haven't and I can't create promo codes and such. Anyone else having this issue?
Review the Apple Developer Program License Agreement.
Excellent. Worked for me too. Seems the message in my case was erroneous (given I know I had sigened the agreement the day before).
Cleared the browser completely, and its gone away.
Amazing how much time these things consume!
Yep, suddenly everything works. I didn't have to clear any caches or restart anything. Someone obviously fixed something somewhere...