You might want to be sure you have the latest updates and bug fixes installed. Then try it again.

In a case like this, you might want to print the lyrics and chords once you get it back together.

I would also try not loading the file.... start a whole new project and with BB, it's really easy to get back to where you were if you are entering the chords from a piece of paper that you printed. You can copy the lyrics to a word processor and then back into the new project.

Sometimes a project gets corrupted and it will never work right after that so starting over is the only reasonable solution.

I have had things happen that corrupted files before. Most of the time, a cold boot sets things right, but there was one incidence that required me to start a new project and then delete the old one from the machine.

A call to support seems like it might be useful as well if this continues into a new project.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.