I have EMC 8 ver 3 on an XP machine. I've been able to burn DVD+R disks in the past. Now, I've managed to burn a 1 hr. video on a DVD+RW disk which works as it should. For some reason, I can't burn the same video on the DVD+R disks. It just ruins them. I've reinstalled the program but it hasn't corrected anything. Does anyone have any suggestions what to look for?

I'd suggest a clean install rather than just a reinstall, to restore the program to its factory settings.
Here are the clean install instructions for EMC 7, 8, 9, or 10 in XP [even though they're only labeled 9 and 10].

Thanks for the fast reply. When I reinstalled the software, I followed most of the steps in that link. However, I've solved the problem. First I use video wave to edit the file. Then I burn an iso file. I then use "burn image" in the copy section of the main screen and all works perfectly.
Thanks again.

Excellent!!

It's so good when everything comes together.

Someone on the Roxio forums wrote something to the effect;

Plan A is most effective when the thing you're working on
understands that Plan B involves a sledge hammer and a pipe wrench.