@marky The dropdown menu is under General Settings > Analytics Account: All Website Data (it should show your UA code here).
Did you uncheck the box (Manually enter your UA code)?
This annoying problem has happened to me too! I actually had to get my hosting company to deactivate all my plugins before I was able to login to my Dashboard. I found the manual way doesn’t work for me. I unchecked it, re-authenticated my Google Analytics, got the little code and pasted it in the box. Then chose my website user profile from the dropdown menu. Try this and see if it works for you!
The weird thing is after every update from Yoast, I get the same error message again. But repeating the steps above fixes it for me. It’s just weird to have to keep doing it. Developers any clues to why this is happening?
http://charmystique.com/