Reinstall D2r and then use REVO Uninstaller (free) to uninstall it. Make sure you also "Scan" for leftovers.
[URL]https://www.revouninstaller.com/products/revo-uninstaller-free/[/URL]
Then you can try again.
The regular uninstaller doesn't remove everything... the "Scan:" for leftovers after uninstalling with REVO does remove everything.
this just worked for me