Okay, I just got an email from Cakewalk. The problem is that's how my programs referenced the SFZs. I was keeping the SFZs separate because I was moving the Expansion Pack between two different computers (at home/on the road) and kept the multisamples, SFZs, and programs separate to make it easier to do transfers. The SFZs
should have been in a folder that also had the multisamples. As you pointed out, the way it is now does "work," but it's messy.
I told Cakewalk if they could provide me the locations for where things are supposed to be, I could create a new set of programs that reference the correct locations and that could be done as an update to tidy up the multisamples folders.