Bill, another trick you could try is to install patch 1.9.7.11 instead of the more demanding 1.11.7.21 (which you will only need for addons 3 and above)
To do this, you would have to uninstall and reinstall AFPD, install starflight addon, then install patch 1.9.7.11
The uninstall instructions can be found at the bottom of this page
http://www.aerofly.com/afpd/downloads.html and the link for patch 1.9.7.11 can be found somewhere at the top of the same page