Bioshock - Trophies - Help!!!

Hi guys and gals I am having trouble figuring out why I have not received the trophy - "Research PhD". I have received all of the trophies for the nitro, leadhead, thuggish, houdini, and spider splicers as well as both categories of Big Daddys - the Rosie and Bouncer, as well as the little sister. I have also full researched the security bots and turret. All of these things will not allow me to take a picture of them and says photo not taken, reseach complete. Any thoughts? Am I missing something?

Thanks!

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Panman_Dan

While I have the game for the 360 I had the same problem. Never found out why it does it I am attempting another playthrough to get my last achievement. It is a common problem.

yeah i checked the cameras and they won't let me take pictures either, I guess its just a simple bug/glitch. I've been hearing that the rpg turrent and the machine gun turret are two different things and need to be researched, yet, there are also flamethrower turrets but only a few and not enough to fully reserch, argh, I'm frustrated!Panman_Dan

all turrets count as same perhaps you missed one when you try to take a pic does it say research complete for this.