求助，小弟安装《幽浮：未知敌人》3DM简体中文硬盘版，报如下错误

zhaogange

Rendering thread exception:
Direct3DDevice->CreateVolumeTexture( SizeX, SizeY, SizeZ, NumMips, GetD3DTextureUsageFlags(Flags), (D3DFORMAT)GPixelFormats[Format].PlatformFormat, GetD3DTexturePool(Flags), (IDirect3DVolumeTexture9 **)Texture3D->GetInitReference(), NULL ) failed
at C:\BuildAgent\work\ff356cfe449a2ecc\branches\UE3_XComPC\Development\Src\D3D9Drv\Src\D3D9Texture.cpp:179
with error D3DERR_INVALIDCALL,
SizeX=82, SizeY=42, SizeZ=21, Format=A8R8G8B8=D3DFMT_A8R8G8B8, NumMips=1, Flags=, TexMemoryAvailable=1600MB
Address = 0x7545c41f (filename not found) [in C:\windows\syswow64\KERNELBASE.dll]
Address = 0x18f7441  (filename not found) [in C:\Program Files (x86)\Bohemia Interactive Studio\XCom-Enemy-Unknown\Binaries\Win32\XComGame.exe]
Address = 0x1ad8c83  (filename not found) [in C:\Program Files (x86)\Bohemia Interactive Studio\XCom-Enemy-Unknown\Binaries\Win32\XComGame.exe]

系统环境为WIN7 64位 家庭高级版。。
已经安装了DX11了。
麻烦知道的老鸟，帮帮忙，看看是什么问题，谢谢啦！