I'm using the Mac OSX version if that matters. I built a custom metar.dat.gz and apt.dat.gz files for the Oregon airports I care about. This works fine.I added a new airport (K5J0). I built the initial entry using a text editor, following the format documentation. I then added taxiways and wind socks using TaxiDraw. Everything shows up fine in TaxiDraw.However, Flightgear shows the two runways OK, but they do not cross over as they should. There is always a gap between the end of runway 9 and the side of runway 17. It also doesn't draw the taxiways correctly, it just makes up some on it's own.The scenery is also messed up in John Day, Oregon area. There are no towns and the rivers often run up the sides of the foothills. Very strange.I have no idea what the problem is. Here is the data as produced by TaxiDraw:1 3697 0 0 K5J0 Grant County Regional10 44.401400 -118.970300 09x 109.00 3826 0.0390 0.0000 60 111111 01 0 1 0.25 010 44.403333 -118.964167 17x 183.00 4500 0.0000 0.0000 60 231121 01 0 1 0.25 110 44.403286 -118.963083 xxx 3.00 4500 0.0000 0.0000 40 111111 02 0 0 0.25 010 44.409413 -118.963209 xxx 93.00 328 0.0000 0.0000 40 111111 02 0 0 0.25 010 44.403987 -118.963611 xxx 93.00 328 0.0000 0.0000 40 111111 02 0 0 0.25 010 44.397178 -118.964114 xxx 93.00 328 0.0000 0.0000 40 111111 02 0 0 0.25 010 44.403304 -118.976989 xxx 21.56 120 0.0000 0.0000 60 111111 02 0 0 0.25 019 44.402586 -118.966779 1 Windsock19 44.406862 -118.962178 0 Windsock50 11837 AWOS51 12280 CTAF/UNICOM

Try posting this in the Flightgear developers' mailing list. You will get more help from there.