Hi,I installed the new addon but Fsx doesn't start anymore. I uninstalled the new addon and then I have reinstalled it again but the problem remains. Without the maddog Fsx starts regurarly.What happnend? What is the problem?Is there someone could help me please?Thanks Algeggi

I'm not familiar with maddog but, obviously that's the problem.. is there some support listed in any of the info you received with it? There's some sort of conflict between it and your set-up... more details would help someone here who may know something about maddog.