./fgfs ... --addon=/home/chris/.fgfs/Addons/SimEarth
But I would rather use $FG_HOME in there, since that was what I thought it was for. When I do this:
./fgfs ... --addon=$FG_HOME/Addons/SimEarth
I get the following error
Error registering an add-on: unable to find add-on metadata file '//Addons/SimEarth/addon-metadata.xml'
Making it seem that $FG_HOME has no meaning in this context. Any insight on this?