Truly the only thing I can say about this movie is that it's really sad to see franchises fizzle out, and this one is one of the worst ones.
I mean, you can tell when even the actors are bored and just getting a paycheck. Normally, these fairly decent actors at least LOOK like they are into their roles, but this time, they act like they are cartoonish fops from 1940s Saturday Morning Matinees.
Heck, the most lively actors in this movie were the CG Dinosaurs!
This movie was badly plotted, poorly written, sadly acted, and the editing just made it choppy and the story incomprehensible.