Using a Toshiba D-VR610KU I

Question

Using a Toshiba D-VR610KU I dubbed from a cassette tapeto DVD after first formatting a DVD-RW disc in Video mode.The disc plays back fine on the Toshiba machine afterit is finalized. But it won't play back onmy Go-Video DVR5000 although rented discs play OKon the Go-Video machine. What can I do to make thediscs playable on other machines?