Carl,
you mentioned stat OBS Scenery. Google says this is from UK Farmstrips Scenery and is part 1. You say you found the problem (first problem). Did you remove, disable, reposition or what with that scenery in the FSX Scenery Library??
Reading the directions on the "Fly Away" site I think I would disable or remove all the files related to the UK Farmstrips Scenery and see if thing clear up. I recommend this method because reading the directions on their site if you can follow them at all they seem to be throwing things willy nilly into FSX and this might be the cause of your lack of smoke and spray textures.
Remember that the RTMM libraries should always be at the top of your FSX Scenery Library with all the RTMM scenery files below that. The FTX/ORBX files should be next with Tongass X below the FTX/ORBX. Other scenery IE: UK Farmstrip Scenery, should be below that.
When you add new foreign scenery (not RTMM or ORBX) to the FSX Library it will always be at the top and you need to move it below all the RTMM, FTX/ORBX Tongass X stuff to preserve the order or it could interfere with the 'Good Scenery'
FWIW I made a post somewhere on the site with screen shots of my Library order but after looking for a good hour I can't find the darn thing. If you can find it the order I list above is shown.
