Note that the source code of the download link specifies http not https for the link target. Correcting this would probably solve the problem.<li><a href="http://downloads.hobbico.com.s3-website.us-east-2.amazonaws.com/software/gpm/RFAOV1_G4.zip">Download Add-Ons 1 (RFAOV1_G4.zip)</a></li>
This is the key to get it to work. Thank you
Rc51dude
Well-known member
Dec 28, 2021
Make sure you put the Add-on files in the correct data folder.
I did a default install of the Steam version, this is the file path on my system.
C:\Program Files (x86)\Steam\steamapps\common\RealFlight 9\Data