After working for some time with my new Magnavox 640 DVD Recorder, I finally got it to record on a DVD-RW but I get a "No Disc" error when I put in a DVD-R.
Thank you so much, David. That idiot of a salesman sold me 50 DVD-Rs at the same time that I bought the DVD Recorder. I didn't know the difference. Heck, I just found out that there are -Rs and +Rs from reading this forum!