I recently installed B174 (didn't notice there is already a B175!) and have been experiencing CTDs with fs9, or total/partial incompatibilities when using LevelD's 767.My first CTD ocurred today when I was approaching a rather thunderstormy area around Madeira islands. All of a sudden fs9 crashed, and the XP message described something related to TERRAIN.DLL. I never had any problems flying in that area, so I found it rather strange.Later on, trying to import a flight in LevelD767 I noticed that many switches/sounds were not funtioning. I restarted fs9 and AS and the situation repeated. Then, I decided to start fs9 only with it's own Real Weather, and things were OK. Just to make sure it was not simple coincidence I restarted fs9 and AS, and the problems returned.Any ideas?Maybe I should download & install B175?

Hi,Some ideas for you:Yes, try B175.Try another plane.Terrain.dll is an FS04 file.Try switching your Render to Texture opposite to what you have it now.Any 3rd party clouds?Video drivers up to date?Hope this helps,JimActiveSky Sales and Supporthttp://www.hifisim.com/images/as2004proudsupporter.jpg