Playlist Missing at home but in Car comes up fine

I don't get this, i'm new to my empeg - but I was working fine last time in Jemplode 41, I could see my playlists on the lan and everything but now when i plugged in and go to playlists on the empeg says "No Playlists"? so I took it back to my car and put it in and all the playlists show up!!!? can anyone tell me what i'm doing wrong?