Aerosim

Hello All:Really in need of some help. I purchased both Volumes of Aerosim. They were fairly large downloads. I might be missing something in terms of installing the packages. When I start up FS9, I can select the aircraft, all the switches work however, when I try to activate the A/P FS9 shuts down. This does not happen with any other addon I have (PMDG 737/747 DF727 LDS767 and more)What could be the matter. I see from a number of posts folks are raving about the package. The guys at aerosim seem helpful. Their suggestion was that I update my sound (audigy2) and DirectX which I did. All other FS Addons are fine.Any feedback would be appreciated.ThanksRay