It seems a little buggy when you install a lot of games or when you delete a game..
If you install one game at a time and never delete any games,,it seems to work fine..
When you delete a game,,it does something to the gamedata files..
Looks like it deletes more than it should..(sometimes)
Try not to delete any games..If you have a game that doesnt score right,,try unzipping the game.tar zip and just upload the gamedata folder..