The sound center programs should be installing into:
C:\ProgramData\Cakewalk\Cakewalk Sound Center
In Dimension Pro and Rapture you can force the program browser to refresh by pressing the
F5 key while it's open. I'll have to go double-check but I believe it is the same for Sound Center, try pressing F5 to see if it refreshes the program list.
If not, send me a PM and I'll get one of our tech support reps that knows Sound Center inside and out to assist further.