Problems installing Corel PaintshopPro X5 - "your system has not been modified"

This past January 2013, I upgraded my laptop to Windows 8. Since then I had Paintshop Pro X5, VideoStudio Pro X5, and Corel Wordperfect Suite X5 working on it without any problems.

Recently, I updated my laptop to an SS drive. Since I was unable to clone the drive due to size difference, I did a fresh Windows 8 install and began, over time, reinstalling my software as well. I had no problems reinstalling the Wordperfect Suite or VideoStudio Pro X5. Both installed without a hitch and work fine.

However, my attempts to install Paintshop Pro X5 has been an exasperating experience. The first time I was able to enter the serial number and it seemed all was well until it reached near the end. I wasn't looking at the time but then I noticed that the laptop went blank and then rebooted.

I tried to start the program, but nothing would work. I then attempted a re-install which gave me a "your system has not been modified" shown below:

Nothing happens when the Installation Wizard reaches the end. Multiple attempts to get this install to work have failed.

I've tried manually uninstalling, cleaning out the registry, and installing under safe mode. I also tried using Admin with UAC turned off. Each attempt has met with the above message when I try to reinstall. 

Any suggestions as what I may do next to get Paintshop Pro installing properly?

Thank you for your time.