Both Penumbra episode giving vertex shader errors 8800GTX.

[bonediggy1031]

If you have latest drivers and it still does not work:
Uninstall drivers, reboot, install drivers again.

Thank you for the info...I did uninstall the games/re-install them and patch them also and I'll do the drivers again (this would be the second time however) but maybe fortune will smile on me I'll let you know how things work out...