Hi all.
Cathy, before you started your DVDSP project, did you properly set your DVDSP preferences?
There is a preference setting where you tell your project the size of DVD-R to which your are recording your project. The choices are 4.7 and 8.5.
For dual layer DVD-R media, make sure that your DVD-R size is set to 8.5.
I hope this information helps.
Take care.
-DH