The "Mixed Flightmodels, check drag stab2" is fairly straightforward to understand.
When he checked the source code Ralf found that here were several really bad errors relating to how flight model data was used.
The code was badly botched, but it gave a reasonable effect with the old flight models.
Ralf corrected he code, and put more appropriate data in the flight files to work with the corrected code.
So, there are old and new flight files, and they cannot be mixed. The eaw.exe checks if there is a mixture of old and new, and if that is the case it generates the "Mixed Flightmodels, check drag stab2" error.
All the files in the downloaded "Planes" folder are of the new type, and if I were using it, and copied even just one of the older type "*.flt" files from somewhere else, and pasted it into the EAW directory, then I would get the error.
The exe will work with either all new, or all old, and uses the appropriate set of routines. What it cannot do is to work with a mixture, and use the old routines with the old files and the new routines with the new ones.
What you need to check is how you managed to create the mixture in the first place. Maybe it is as simple as having some stray "*.flt" files in you EAW folder.
Jel
