Goto: Start/Run, then type Regedit.
Proceed to key:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Cakewalk Music Software\Dimension Pro
Rename "Dimension Pro" to "Dimension gro" or whatever you like. This is for the x64bit install.
If you have a 32bit install, go to:
HKEY_LOCAL_MACHINE\SOFTWARE\Cakewalk Music Software\Dimension Pro
Make the same change as above. Both changes will need to be made.
Run the Sonar X2 installer. Set the "advanced install." Then click the drop down and select to install the soft synths. Scroll down and uncheck the parent "Soft synths" tree then check the "Rapture" soft synth. Finish install.
Don't forget to go back and rename "Dimension gro" or whatever you named it to "Dimension Pro" again.
For those that don't know. After you run the unzip thing with your X2 downloads. You can go to:
C:users\"your name"\app data\local\temp\Sonar X2
There you will find the folder where the downloads create the installer. Copy this to another location as it will delete itself after you install X2. It does not delete itself if you have to run it again from another location. Why it deletes itself from the location it unzips to is something for a Windows guru to answer.
Hope this helps some of you guys!!!
Someone else posted the workaround, I thought it might be easier to understand this way.