Just saw your answer, Scott. I contacted Tech Support before seeing your response and sent the file. Kris found the culprit - my deck wasn't completely "attached" to the house at one point/corner preventing the deck from creating the borders.
Thank you for your input, though!!!
I did just post another question about being able to have window casing a different material/color from the sill. If I change one, both change. Any thoughts??
Linda in Lancaster (Ohio) :-)