Software Deployment

I am using WPS Pro 6.1

I have created a package for "PhotoMapper 5" and the package installs and works great if I install it on a clean machine. In the "upgrade" area, I added the old "PhotoMapper 4.2.2.msi" for it to remove the old version, and then upgrade/install the new version.

If I install 4.2.2 on a computer, reboot, then if I run the new PhotoMapper5.msi installation, it only installs 6 files to the "C:\Program Files\PhotoMapper" folder... If I run the application from the start menu, it does a mini-setup and then finishes installing the remaining 70+ files into that folder.

I checked the "Administrator Options" under "Package Options" and I checked "Per-Machine installation" and when I run the MSI, I use the ALLUSERS=1 switch... what else could I be missing?

Thanks in advance.
Mike