Thank you mdiemer and abacab for your quick response.
abacab, when I sign into my old Cakewalk account and go to Support then Download Products I can see Dimension Pro there as something that I have purchased. But when I click on the Dimension Pro link I only get choices to download updates to Dimension Pro, not the full version. That is why I chose to re-install it from DVD.
mdiemer, you are right, BandLab's version of Cakewalk installed without a hitch and it behaves exactly like Sonar X3. Unfortunately that includes the errors that prompted me to start this post in the first place and a couple of other errors now. (Multi sample not found Rain.sfz and Thunder One Shots.sfz). All of these errors only require that I OK them and the project loads fine afterward, it just takes a long time for them to load which is annoying to me. Next I decided to follow your suggestion and install Dimension Pro from DVD thinking that maybe that would help to get around the errors, but it didn't. However, Dimension Pro works fine now once I OK the errors, so that's progress. Now I just got to figure out how to remove references to Dimension Pro(Synth Rack) and also Rapture (Synth Rack)in my Cakewalk projects.