F.E.A.R. 2: Project Origin Message Board  

I can confirm that this seems to happen with certain weapons. After monitoring the trainer code, I still don't understand why. It must have something to do with the AMOUNT of ammo I am giving or something. At any rate, the fix for now is:

If you need a certain weapon (i.e. the missle launcher), then turn OFF options 3 and 4, then restart from last save. You will be able to pick up weapons. Once you have the weapon you need, turn the options back on, and then you might want to scroll through your weapons to just make sure they are maximized with ammo-

I hope this helps.

best,
Cal

yep, it worked for me. thanks.

Let me try this out and see if I can have the sniper rifle and the rocket launcher.

Yeah, I can confirm that that works, it's what I've been doing. The autosaves are pretty frequent so it's no big deal.