scook
DPro has always been supplied as a separate disc or download installer when bundled with SONAR. It was the same as buying the retail version. If SONAR is not scanning an old version it is likely only the 32bit DirectX version is installed. You could download the update to v1.5 which should have the option to install the 32 and 64bit VST format http://www.cakewalk.com/Support/Knowledge-Base/2007013166/Dimension-Pro-Dimension-LE-1-5-Update. Note, this update required DPro v1.2, if the installed version is older the 1.2 update is here http://www.cakewalk.com/Support/Knowledge-Base/2005302/Dimension-Pro-1-2-update.