Found the solution here... http://forums.installaware.com/viewtopic.php?f=2&t=1719 In a nutshell, the Plug-In registry Folder name MUST BE THE SAME as the Action Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MimarSinan\InstallAware\2.0\Plug-Ins\InstallAwarePlugin]...

Background I am using: * WIndows 7 64bit * InstallAware 9 R2 (Moya.sp1.060409) * Delphi 2007 What I did: * Created a new project from InstallAware (Plug-Ins>Delphi Plug-In) * Opened project in Delphi 2007, Compiled both DLLs. * Added the following to my registry: Windows Registry Editor Version 5.00...