Please be advised that there will be new/updated version v4 of Plan G released in the next few days.
The Plan G build scenery database component for MSFS was unable to read the scenery location/ICAO data components in some scenery pieces. (RTMM scenery Included).
The dev of Plan G was contacted concerning this issue and has affected a fix and we have tested the beta build, which indeed fixes the issue. We are pleased to advise that the developer will release an updated version pf Plan G v4 in the next few days.
Will advise when the version has been released.
Norm