Nope, I don't think they did either. If their system is anything like ours - and who knows what's out there - when we load the FMS, it has to ALL be crosschecked by both crew: filed routing, each waypoint, and total distance. If you typed in the wrong destination identifier, unless it was with a couple miles of the right destination, it would bear no resemblance to the flight release.
Seems more likely they were dispatched to the wrong airport, pure and simple. I could see how a dispatcher could make a typo in their software, and then the comp would pull up all the possible routing possibilities. Then performance, fuel, etc computations made for that route...
And with it being leased, if the dispatcher and crew were unfamiliar with the destination and surrounding geography, they wouldn't recognize the error. Heck we had a pax who bought a ticket for Palm Springs, CA and was quite surprised to disembark at West Palm Beach, FL!!
