well i guess for debug, just get create a new folder and put all your setup.exe or any variations of it into it, and put this into your ro folder
http://svn6.assembla.com/svn/ClientSide/Diff_Project/HKCU_Setup/Setup.exe
diff your client again and don't use hklm to hkcu. ANd make sure you don't have any other setup.exe open when you try this.
Then see what happens.