Dynamic shadows disappeared

[vldbsh]

Hello everyone
I have a problem: i tried to use lightbounce tool and after the next render all dynamic shadows (lamp\soft lamp) disappeared
In concole i saw errors ShaderAPIDX8::CreateD3DTexture: D3DERR_INVALIDCALL
ShaderAPIDX8::CreateDepthStencilSurface: D3DERR_INVALIDCALL

So, i tried reinstall drivers\gmod,
i deleted lightbounce tool and everything connected with it
I ran the game with parameters: -dxlevel 81 and -force_vendor_id 0x10DE -force_device_id 0x1180

I am confused, there is no solution to this problem on the internet. I cant make artworks without shadows. Help me please