There's an existing thread on this topic in the Gospel Library for iOS subforum (
http://tech.lds.org/forum/viewtopic.php?f=103&t=27872 )The content team has pushed out a bad update to the content for Gospel Library, and so all current versions of the app including the iOS, Android, and Windows versions are affected.
The content team will, of course, be diligent in restoring the Book of Mormon as quickly as possible.