Thanks Hagar for your trouble, It was actually the default API's I was having trouble with - just seemed to stop working, but I have got the new version of FSSC and it seems to have sorted itself out.
Thanks once again. Birdman
PS. I have another question to ask, no i'll start another topic - a small matter of a runway floating in thin air 1000ft above my scenery
(a little tricky to land on - AI find it amusing)