Just purchased the Aerofly Professional Deluxe along with an adapter for my Futaba 9C. The simulator is great, however, I am having a problem when I go to edit a model and use the "Save as". The program crashes and I have to restart. If I just use the "Save" I have no problems. Ikarus tech support has no idea and has stopped responding to my e-mails. Typical, they got my $$ and now theyr'e off and running! I've already downloaded the latest video drivers for my 128 mg GForce video card and the latest Direct X drivers from MS.