I made a slideshow iMovie for my sister's graduation party, and it made an iDVD cover thing for it. There's like 215 pictures and its 22-ish minutes long. When it was in the middle of burning, it said please insert another disc. I put the first one in my DVD Player and it played the song that plays main screen but it's blank, and after the second one was done burning, I put it in and it didn't do anything. I'm not too sure why it would do that Anyone know what I'm doing wrong?