For those who have suffered through the ridiculous problems of database corruption, others have mentioned a simple yet effective solution to this. If you find some, or many, of your files have the wrong names, or some of your folders appear empty, this will solve your problem. Do not delete or move any of your files from your player, simply change the Language preference. Settings/Display/Language By changing the language all the files on the player will be scanned to create a brand new database file. After the scanning is finished, simply change the language back again to your preference, and you're good to go.