This happens to me sometimes when I go get a spell before they tell me. The message sometimes comes late or never from the teacher. Ra is the most recent spell you should have learned. If you didn't and can't speak to the teacher then you might be missing a prequest required.
Did you log into a new computer or a computer you have not played in a while? That has happened to me when i log into a computer that I have not played in a while. Nothing is wrong, your next quest is at level 68-- but sometimes those bubbles pop up with no rhyme or reason.