Asus Router DL Master Hiccup

Anyone use Asus routers but more specifically the Download Master app it has? Ive got an external HD plugged into it and I was seeding a 130 GB file for a week or so and one day when I logged into the router to check things out, the seed wasn't there anymore!! So I started the tracker but it wouldn't recognize the file even though it's still there in the HD! Anyone ever experience this?