Aksuaho
You have to install both Dimension and Rapture, then re-install Rapture Pro / Rapture Session.
It is possible to get DPro or Rapture programs into Rapture Pro/Session regardless of the installation order. All the RPro/Session installer does is copy
C:\ProgramData\Cakewalk\Dimension Pro\Programs to
C:\Cakewalk Content\Rapture Pro\Programs\Dimension Pro (legacy)and
C:\ProgramData\Cakewalk\Rapture\Programs to
C:\Cakewalk Content\Rapture Pro\Programs\Rapture (legacy) Note: ProgramData is a hidden folder. If RPro/Session are installed before DPro or Rapture, manually copying the program folders works too.
The copy process is a one-time event that happens during installation. There is no automatic process to sync the program folders. Any programs created in the legacy synths after the RPro/Session install will not appear in the RPro/Session until their are manually copied from ProgramData.
IIRC, this is why all the new installers for DPro and Rapture seem not to work. Instead of placing their programs in the legacy paths or both legacy and RPro/Session paths, the installers place programs in the RPro/Session path only. To get the programs in the legacy paths requires copying them from the RPro/Session path.