App Error Device9-> Clear FAILED: D3DERR_INVALIDCALL

[Saloranta]

I keep getting this error everytime I try to launch Duke Nukem Forever on steam (http://ads.ylilauta.fi/g/src/130830694364.jpg)

I re-installed Steam and Duke Nukem Forever and updated Directx and my Graphics Card driver (MSI Radeon HD6850 1GB) and still it gives the same error.

Please help. :(

[blusls]

I am having the same issue, will add a screenshot later. I am running an EVGA 450 GTS 1GB, Phenom II X2 550, 6GB RAM, Striped RAID. Any help would be greatly appreciated as I actually like the game for what it is and just want to play it.

[Saloranta]

I solved it! Just delete the system.ini file from your DNF system folder. It will make a new one and start the game!