had that tonight... after loading an older copy of my database v2 file thinking that would fix everything (it didn't) i thought... well maybe ill drag my music folder onto the "relocate lost files" tab. so i did that, and suddenly all the crates were full again and it didnt take the time it would take if it was actually relocating the lost files. they just appeared again. like magic. lol. so, do that before freaking out too much. hope i can get the latest changes i made back with the database v2 file that i first copied to my desktop. i havent tried yet.