iLO DVDR05 DVD-Recorder

Great Player when it just plays back DVDs. However, when I went to test it out on how well it records, I had problems. I recorded about 8 different clips with EP mode, three of which were 1 hour long and the rest less than 15 min. I had edited the first 5 titles with ease, but when I went to edit the sixth it hung up. The titles for the 6-8 clips would not be displayed when the clip picture stayed on the screen and the titles for the first 5 displayed like normal. When I tried to play the DVD it would not load. After ejecting the disk and trying to get the menu to display, the player took a long time to load and then gave a "Unknown Disk" message. What's up with that? I cannot get it or any other player to recognize the files that were burned on the disk. I used a DVD R Maxwell disk. It's possible that this problem relates to the DVD itself, but I'm skeptical.