A possibly useful feature would be to flag each file in the Book Browser with some indicator that there is an error in it. That way the user wouldn't have to depend on actually looking at the file directly to see that there's a problem with it. But I know that this is just "one more feature" to add.
And in all honesty, I WAS intentionally ignoring the error in the file.
Perhaps if I stash it in the Misc folder rather than the Text folder, things will work better. One pays for being sloppy.