Hi Hagar. The campaign is BobCFS2 by Lenny Flank (BoBCFS2 is the name of the .zip file as it downloaded). I re-read the installation instructions and it does say that it includes the scenery for the default CFS1 airfields. From this I'd have to say it would match the default locations in airbase.dat. He also says that the .zip file is comprised of 3 third party folders with their own instructions.
The runways are called European Runways for CFS2 by Mathias Pommerien. When initially installed the airbases worked fine, at least the ones I looked at. As I said previously, this issue seemed to only happen with *Audembert and I only noticed it because it was an airbase in the campaign. It still showed up in freeflight and quick combat, but not in the missions or campaigns. The only thing I've done (I think) is change the position of the runways in the scenery library priorities list.
This may be the most relevant bit; Steve McClelland's scenery cfsiieurope also adds scenery for the airbases in Europe as well as roads, rivers etc (and mesh? Audembert now has a hill).
Right. I found BobCFS2 & downloaded it to check it out. From the description this is a comprehensive set of 120 missions in 5 campaigns. Note that the zipfile
includes all required scenery and airplanes. I haven't installed it but my first impressions are that it could have been configured better. It's very complex & I suspect could easily cause problems if something is overlooked.
From a quick investigation this is intended for use with the CFS2 default scenery. The included European Runways update consists of two separate sets of BGL files. These will add 66 of the stock CFS1 runways and airport entries converted for use with CFS2.
The visual runways themselves have been placed in the CFS1 default locations including one file named AudembertRW.BGL. From the instructions these are intended to be installed to the CFS2\Scenedb\runways\scenery folder.
The AFD BGLs will add the airfields to the Free Flight selection menu & these are installed to the CFS2\Scenedb\afdfiles\scenery folder. One of these files is named AudembertAFD.BGL
I haven't tried any of this but it's quite possible it will conflict with 3rd party scenery by other developers including Steve McClelland & Cliff Burgess. If you have Steve's cfsiieurope & 3rd party scenery by other developers installed you could end up with several different locations for default CFS1 airfields like Audembert which would explain your problem. Steve's CFSII Europe scenery is mesh which could cause other conflicts with missions not intended for it.
IMHO the best way to use this BoB addon would be to use a separate install of CFS2 specifically for it & other missions/campaigns using the default European scenery. You could of course remove any conflicting airfields if you wish by removing the appropriate AFD & runway BGL files but this could be complicated & involve modifying the missions.
PS. Mathias Pommerien is a regular member of this forum but he spends his time with CFS3 these days.