I think I have similar problem. Actually I imported composition from AE in Pr. Composition has a running text and music. When I export my video from Pr, I get all the things I made in Pr, music from exported AE file, but I don’t get letters. And when i preview file I see the letters, but when I export it there are none. The file is on the top, so it’s not covered with some file above him. Even stranger I did this yesterday with same composition, and it worked fine. Ideas?