Hey guys! OP here. I did resolve this for myself personally, maybe you guys can try. I ended up completely uninstalling all of the Evernote installer files in %Temp% to give myself a fresh start. I also used CCleaner to clear out my Temp folder and any lingering registry items. Once that was done, I restarted my computer and before opening ANY program, I tried the installer again and it worked! Really nothing fancy and you might have all tried that already, but that was what I did and it worked for me.