For Rapture I had:
[HKEY_LOCAL_MACHINE\SOFTWARE\Cakewalk Music Software\rp]
"Contents Folder"="K:\\Cakewalk\\Rapture\\Content"
Which I believe I purposely changed and relocated after the initial install.
For Dimension Pro:
[HKEY_LOCAL_MACHINE\SOFTWARE\Cakewalk Music Software\dp]
"Contents Folder"="K:\\Cakewalk\\Dimension Pro\\Content"
"Multisamples Folder"="K:\\Cakewalk\\Dimension Pro\\"
I believe I also set this manually.
That was some time ago, but I don't think I had much trouble with the relocation.
When I installed Rapture Pro, this is what I saw:
[HKEY_LOCAL_MACHINE\SOFTWARE\Cakewalk Music Software\Rapture Pro\2.0]
"Rap Multisamples Path"="K:\\Cakewalk\\Rapture\\Content"
"Dim Multisamples Path"="K:\\Cakewalk\\Dimension Pro\\"
"VST2DLL Path"="G:\\VST-64\\Cakewalk\\Rapture Pro"
"VST3DLL Path"="C:\\Program Files\\Common Files\\VST3\\Rapture Pro"
"AppData Path"="C:\\Program Files\\Cakewalk\\Rapture Pro"