Again, you need to install in the exact same directory. If you move the install to a different directory then your settings will be lost. The default directory should be C:\Proscan so that should be the directory you're installing to
One thing that I have seen, when upgrading the version, is that it goes to the folder of your current installation, but then (if you look closely), it may be installing to a "new" ProScan directory.
So, you'll get a prompt asking you to approve the installation to "C:\Proscan\Proscan, instead of just "C:\Proscan".
I make it a point to watch for, & delete the extended folder, making the installation to the correct, original, folder.
Whenever I download a new version, it doesn't have any of my previous settings or logs from the last one. I've tried moving the file install location, and it doesn't do anything.
Use Windows Explorer (called File Explorer in some versions of Windows.
See if you see the 'double ProScan" pattern. If so, try doing the upgrade again, and make sure that you do the install to the original, base, folder.