Cannot install DaVinci Resolve Lite 9.1

I recently downloaded DaVinci Resolve Lite from your site and when I went to install the program I received an error message saying "A newer version Resolve is already installed, please uninstall it in Control Panel first." The problem is that this is the newest version and I have never used this program before. Any ideas on how to fix this? Thanks for the help.

I attached a cropped screenshot for reference.

[Dwaine Maggart]

Yes, you need to use Windows 7 64 bit Pro, as per the Windows Resolve Config guide.

Ok thank you very much