Prepare3D is a professional software and not for private entertainment. For professional software it is very common to pay a recurring mainentance fess, pay for support, and pay for upgrades. If someone is not willing or able to pay for that, make it easy for yourself and rollback to FSX or FS9. The discussion whether V3.0 is actually a V2.6 is absolutely useless and pettifogging. Ruediger