Cannot take Screenshots/Films/Broadcast BC2 or Crysis on Xfire?

Infact, quite a few more games than this, yet I see a few people with BC2 screenshots, my game is detected fine, retail steam version, yet the ingame xfire doesnt work for neither of these games.... any ideas on how to correct this?

I think it's because you may be running Crysis and BF: BC2 in DX10, whereas XFire thinks they're running in DX9.
Open XFire and go to Tools > Options > Games and change "In-Game Renderer" to DX10, if it'll let you.

i had the same problem with crysis