I had been recording 20 – 30 minutes of material off of TV for the last 5 weeks. Each time I would insert my Disc (Maxell DVD-R) into my DVD Recorder – Panasonic DMR ES20 – it would read the Disc and then display how much time was left on the Electronic Display (i.e. R01:47). I had about 15 minutes left on the DVD, which I taped at LP Speed, so I had approximately 3 hours and 45 minutes recorded over 5 individual sessions. When I put the Disc in tonight, the Recorder Read the Disc for awhile, and then I received a message on my TV Screen “Cannot Read. Please Check Disc”. “Err” then displays on the electronic display of the Recorder, which is then unresponsive to any command other than “Open”. I put the Disc in my other Panasonic Recorder – DMR-E55, just to see if it could read the Disc. I did not get an error message – the electronic display on the Recorder said “R0:00”, while nothing appeared on my TV Screen. I hit Function to see if I could Finalize the Disc, but the screen said the Disc had 0:00 used, and – Remaining. When I hit Play, I received a message saying “Cannot Read Disc”. This is a custom made compilation DVD, thus it is virtually irreplaceable. Is there any way the data can be retrieved off this Disc, even though it has not been finalized? Are they any services out there or applications? Has anyone ever encountered this problem, and/or know what causes it? I just put another tape which I have also used previously and was able to record on it, so I know its not the Recorder that is the issue. Any help or advice anyone can provide would be greatly appreciated. Thanks.