On your desktop, the problem is likely your firewall/antivirus blocking the download of the support files for LFNC, which are not included in version you had, but they are supposed to be *downloaded* automatically as soon the app starts. That if the firewall/antivirus are not blocking it.
So, as usual:
- be sure your firewall is not blocking the download
- configure the antivirus to add the whole Addon Manager folder to the antivirus Exclusions
- Alternatively, if you redownload the Universal installer again, the updated installer contains the new files required by LFNC so, it should work even if your firewall/antivirus is preventing the old version from downloading the updated files.