The crash doesn't have anything to do with KSDF, which works fine, and nobody ever reported a problem with it.
However, there are reports that under certain conditions, if you have many airports installed using the add-on.xml method, the sim might crash so, it wasn't KSDF that caused the crash, just that you added another scenery, so you might have reached a threshold where this issue happens. It might also depend on what the other add-ons added with their own add-on.xml files.
There are some reports on the LM forum, and the only pattern seems to be that users with a crash had several sceneries added with the add-on.xml method, but it's almost impossible to troubleshoot this, without looking at all the addons installed, their add-on.xml file, what kind of paths they added, etc.
Try to disable other addons, at least to confirm that KSDF is not the problem.
Have you installed P3D 4.1 ?