I have the exact same problem. Mine has worked for the past 3 months and I had burned about 12 DVD's so far. I tried today for the first time since before Christmas, using the same DVD's that I have used in the past and got an internal error message after about 95% of the DVD recorded 3 straight times.
I read on another post that someone just simply turned theirs off and on and it worked again. I am going to try that and see how it works. Someone else siad that they were sent a whole new TIVO. I am recording shows to send to my husband in Iraq and it would really suck if I have to wate a few weeks trying to get a new TIVO and lose all the shows I have recorded for him in the past 2 weeks.
If anyone has any other suggestions, please help!!
