Game Crash / d3d11: attempt to lock

Hi,

My game crash in game.

Here a part of the output log file :

d3d11: attempt to lock null vertex buffer
d3d11: attempt to lock null index buffer
d3d11: failed to create vertex buffer of size 284640 [0x887A0005]
d3d11: failed to create index buffer of size 9496 [0x887A0005]
d3d11: attempt to lock null vertex buffer
d3d11: attempt to lock null index buffer

Here the full log file : http://pastebin.com/jMgKeCNL

My graphic card : nVidia Geforce GTX 680

DX 11

Anyone can help me to solve this issue ?

Thanks

Any luck I still have them when I run my DX10 card in DX11 with dx10 features enabled. WOrked previously.