Starting actually on runway i/o above it.

[mongoose]

I have several bases; some of which are generic, so I understand ( I think!), why one can't actually start on them as they are not in the qclocations file, but I have made a generic into a specific, but I still can't start on the runway.
Here are the details as I understand what they should be. Any errors or something left out?

airfields_luftwaffe
TOW_LW-Melun-Villaroche_airbase.mos
TOW_LW-Melun-Villaroche_airbase_winter.mos


GSL
TOW_LW-Melun-Villaroche_airbase……………………..Melun-Villaroche


facilities
TOW_LW-Melun-Villaroche_airbase.xml
<Facility Type="Melun-Villaroche" Flags="isAirbase"


qclocations.xml
<City Name="Melun-Villaroche">
<Airbase ID="MelVil" Lat="N48*36'26.62" Lon="E2*40'19.81" Terrain="CFS3Europe" GlobalLayer="CFS3Europe1943"/>
</City>

[mongoose]

It seems all these issues were caused by really weird contents of some runway definitions files with width=1600 or something! I have no idea where those came from but changing that to 50 or similar fixed the issue!