Hello, Al, First, lets start with the basics... If you are using X-Plane 9 are you sure you are using version 9.70 (basically the last version of X-Plane 9)? If X-Plane 10 are you sure you are using the LATEST beta version? Also, you may want to re-install if you are in version 9. Perhaps you mistakenly have installed an XP 10 version of the product into X-Plane 9. Thanks for any info. We'll get it figured out! EDIT: Just one more thought! Aside from the above, the only other time I've seen this issue arise is when people do not run the installer and place it into an aircraft folder, then selecting the installer from within X-Plane as if it were an aircraft. I am not saying you have done this, but I figured it would be worth mention just for the fact others may mistakenly do this down the road! Gotta make sure to run the installer!