Thanks for this explanation.   The problem is, that P3D adds new registered products always with the Packagenumber 0 at the beginning of the list in the related add-on.cfg file define the installed addon products. The package 0 is the first loaded (has the lowest layer), so that the last installed addon gets the lowest layer and is not on top of all installed addons before.   So I expect, that the insertion Point of ORBX must be checked and change each time a Airport is Insta