Actually that's what I thought, hence not finding Scenery Layer 230. I have had a look in FSD LSGG Scenery folder and do not have AP_LSGG.BGL in there, so that is not my problem. There is a file AP-LSGG.BGL xxxxxxx (lots of numbers), but from the Post above this one should be there?
My problem is exactly the same as the original Post; any other thoughts?