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I hope this works as it should. Had to edit the BGL to decompile it. This is the XML from your Flightsim.to .BGL.
The problem is the *Landmark Location*

You are trying to open a MSFS 2024 bgl?Hi there, I'm trying to open a bgl but keep getting this error. Any ideas what I can do?
Yes I am, trying and failing so far. Inibuilds LHR for 2024You are trying to open a MSFS 2024 bgl?
afaik the official handcrafted airports are encrypted in a different manner exactly to stop us from meddling with it. That besides the fact that this tool was made for the MSFS 2020, and the 24 may use different encryption for its native scenery stuff.Yes I am, trying and failing so far. Inibuilds LHR for 2024

Have you tried doing it in 2020 and bringing that data into 2024? I did it with a medium size but active airport in Miami [KOPF] and i was able to open all default items.Ah that is shame!


Amazing work, @PatrickZHi folks
Are you tired (like I am) to find your favorite airport incomplete ? (Missing taxi signs, shuffled taxi names, etc , etc).
So I wrote a small app that converts (as much as possible) an official airport to a project that you can use with the SDK to update your favorite airport.
I used it to update the airport where my fly school is based (CYHU) and I was able to correct and fix the taxi signs and taxi names.
Disclaimer: the app is based on the current (incomplete and partial) knowledge I have of the new structure of the FS2020 BGL files regarding airports. I will try to update it as this knowledge evolves. The app DOES NOT modify any file : it just creates a project that you should be able to use as is.
Enjoy !