Possible cure!
Hi Clarkey,
Many thanks for the HU, good one!
For those having problems I had a trawl over at FSDeveloper.com where the prog designer Arno Gerretsen is based, and others have had the same prob.
The answer, I think, is to use the setting TEXTURE_BUILDING in the texture list and not the obvious TEXTURE_AIRCRAFT. If any options disappear at any stage, re-installation cures that.
On that forum it seems to have given people textured ac to a far distance.
Cheers Shessi