Fspassengers will not start flight once I click load passengers

[samehasyed]

This has really been bugging me. I didn't buy full version because it says the demo is still fully functional. When I load the passengers, set the destination, set flight type, and click load, the
fspassengers flight does not start. Instead a stupid screen saying "this demo is fully functional, however..."' comes up. The dialogue box only has a cancel button and when I click it, fspassengers
quits. What is the problem here?

[Joeflyer]

You have to start the flight from a parking spot at KSFO while in demo mode.