Had the same problem with a Divine character, ranger class. Everything I did to change character parameters didnt work. "Done" button still greyed out.
It may be caused by not completing the character in order, I modified most aspects to test the changes before completing the character.
After a second try, creating another character in order and without touching any aspects after the first selection did the job.
Moreover, portrait selection is terribly slow, I have to wait about 10 seconds to change the selected portrait...