How to reinstall PMDG 747

I recently bought a new computer and used PS Mover to transfer all my files from my old computer to my new. For the most part, it worked well, and I was able to get all of my other payware aircraft to work. However, the PMDG 737 and 747 were giving me problems. I went to Control Panel to delete both of them, and only the 747 was in the list. So I tried to delete it from ControlPanel/Add/Remove programs. I got a message that says "The installed version of the application could not be determined. The application will now close" No matter what I tried, I could not get rid of the PMDG 747 in that manner. I then manually deleted all of the PMDG 737's, the 747's and the main PMDG file in FS9. I also deleted the PMDG .dll file in the modules folder in FS9. Then I reinstalled the 737's, starting with the 600/700 series and finishing up with the 800/900 series. Now both of them work fine. I then used my saved installation.exe file for the PMDG 747 and 747F. The wizard would start to open, and then I got the exact same message (above) that I had gotten when trying to delete it from the Control Panel. I don't know what to do now to get my 747's working again.Everything else is working well now on my new computer. I emailed PMDG to see if they could help, but I was wondering if anyone else here had the same problem and what they did to fix it. Thanks.