Have a look here:
https://www.ngdc.noaa.gov/mgg/topo/gltiles.html

Maybe this is a consideration for future upgrades ...

1. Problem with double displayed yellow planes has been resolved - there were indeed 2 planes with same name!
2. I attach the log file - maybe it is more meaningful to have a completely new log file created before my next multiplayer online flight and send it again.

Dieter

Have a look here:
https://dotnet.microsoft.com/download/dotnet-core/current/runtime
Chose "Download x86"  Please be sure to install the x86 version!

Well, I'm coming back to my report of this:
"""I think it's kown that in multiplayer the red aircrafts of the other simmers are still not shown on map. (this is in P3D v4.5)"""

I was part of a multiplayer flight yesterday and I have to confirm my problem:
- No multiplayer aircraft was displayed on the PlanG map. Of course "Traffic" is anabled in settings.
- Additionally I have another problem:when connected alone by myself and in multiplayer after a short time I get my aircraft symbol shown 2 to 3 times on the map.

(No problem with v 3.2.2.167)

Dieter

Well, "traffic" is enabled.
Will check again and answer when I'm in a multiplayer session again. (might take some days)

Thanks for the update!
- I think it's kown that in multiplayer the red aircrafts of the other simmers are still not shown on map. (this is in P3D v4.5)

Dieter

I suggest to try this:

Go to Avsim and download this:
mapbox_styleset_4_plan-g_v1.0.zip
http://library.avsim.net/download.php?DLID=196747

Unpack and follow the description. (If it stll works you will get an excellent map!)

Go to
File - Options - User Aircraft
Press "Clear" in in "Breadcrumb Trail" window.

Hopefully Tim has recovered completely!
I'm a bit concerned, he didn't answer the forum postings for many days.

Dieter

@Timmy
have a look in your own attached Plan-G_Log.txt" and search for "error".
You will see that dozens (maybe a hundred, I didn't count) of your sceneries are not found in the given path 
C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\ xxxxxxx

Dieter

Well, I have FSX and P3Dv4.2 installed and I built the databases for both simulators. My FSX and P3D installations are different. In FSX I have much more additional freeware scenery enhancements installed so my "Display Data" for FSX and P3D are of course different but everything is displayed on the map.

Dieter

When I zoom to "6" tere are no airports displayed in my PlanG installation, too. From "8" on airports are to be seen.
Maybe Tim will en explanation.

dieter

Yes!

See under tab "Map":
- did you check: Large-Medium-Small-Helipads-FloatPlane Bese-Farm Strips (and others if necessary)?