I have used Photostory for years and thought this would be the same process. I get into the burn menu and do everything I am aware of. It mixes down, takes 30 or so minutes, and then tells me the burning is complete. But, nothing was burned onto the DVD. Anyone willing to help?
Unfortunately, there could be various causes for this, but a couple of easy things to check are:
On the burn screen, is it set to your DVD writer or to "Image Recorder"? If it is the latter, you have created the files to enable you to burn the project later.
Under File>Settings>Program>Folders, where have you chosen to store DVD Images? Go to that folder on your hard drive. Are your DVD files there?