I am also facing the same problem.
After completing the quiz, clicking post result. Then in the Post Results window, the Create Adobe ID link don't work and even after entering correct Adobe ID and password there is an error that reads 'Acrobat.com Login Error.'
I have this problem also..publishing to media (.exe) works.
I too experienced this problem. The problem was fixed by adding the folder the captivate file is published to into the trusted section of the "Flash Player Global Security Settings". If you Google that phrase it will give you a link to the settings.