I download NumXL 1.60 from the main website, and when I started the installer, it begins by notifying it will uninstall the old version, which I think it does, but doesn't complete the install for v 1.6. Instead it gives the error:
Error opening file for writing
I have attempted this multiple times, but it seems the installer thinks there are elements still on my machine , as it offers the choice of "repair" or "uninstall"...neither of which work.
I have rebooted twice and attempted to uninstall with Windows...but nothing works.