DirectX question

The game only gives me a choice for DirectX 9 and not 11 even though 11 is installed on my system. I'm running Win7 64 bit, checked my directX version using dxdiag and it's all current. My video drivers are current for GTX 560 TI. Is there something else I should check? I used to be able to use DirectX 11 on this game.

Thanks. :)