Hi, Wkitty,
thanks for the Info.
I had looked at the specs beforehand and had seen within those that the line formats were basically completely different animals.
And I was very much afraid that there was no easy fix for that.
The workaround was just intended to get FG to initialise the Navdata Cache to be able to enter airports again via the launcher's location tab. It was by no way intended or meant to be that "fix" for the old 715 format, sorry if I worded it that way.
I will test the last nightly today to see whether it does carry one of the newer buildnumbers (4268 or later, as those contain your rollback).
The nightly which was available at 10:18 yesterday should have contained your rollback, but did not. I would not even have attempted to find a workaraound otherwise.
Again, thank you for answering as fast as you did.
Kind regards,
Chris