@Victor_Galvan
Traducción Española
OpenLP upgrades the database containing things like your songs. When you open an older version of OpenLP, it will not be able to read the updated database.
OpenLP 2.4.6 should have offered to backup your files when you installed it. If you backed up the files, you can use the backup and go back to your older version. If you did not save a backup, then getting the newer version to work might be the easier option.
I would be happy to help with your issue in 2.4.6 if I can. Because of the language barrier, I don't quite understand what "the lyrics were on top of me" means. If you send a link to the form discussion you mentioned and perhaps a screenshot of the issue I should be able to help.