https://imgur.com/a/VNYR2T5
The most relevant views. I'm trying to "re"install Calibre 64 bit 3.23 but it's failing because I was unable to uninstall my old version since one of my harddrives failed catastrophically overnight. I removed a key in my registry so that Calibre no longer shows up in the program list as you can see but somewhere the installer still knows about the old install and will not work since it can't uninstall this old version that doesn't exist. I can only get this far into the install because I changed the drive path of a USB to the old drive's path. I'm going to try installing CCleaner now to see if that can do something other than the registry work I already did. Thanks