After a complete re-install, this time without the FTX range of products, but with FS Global 2010 Mesh install, the mysterious problem of the sudden crash suddenly got visible - look at the JPG - that's the culprit.
That's simply confirm what has always been said in that thread: the problem is ALWAYS caused by 3rd party meshes.
However, as explained in the KLAX manual, the "Design Notes" section, if you set the Mesh complexity as suggested in the manual, these terrain "spikes" (which of course will appear regardless if you installed FSDT KLAX or not), will likely go away.
