'Emgu.CV.Capture' does not contain definition for 'GrabProcessState'

I am working with EmguCV 2.9.0.1922 (x86, x64) and am trying to play a video file. I took one of the Emgu-video examples from the Internet (EmguCV 2.4.2 ...) and I can't even compile it: "Emgu.CV.Capture" doesn't contain a definition for GrabProcessState

. (Is Emgu.CV.dll really critical between 2.4 and 2.9?)

In case I go to build EmguCV 2.4.2, that's ok, but runtime error: "First type exception System.DllNotFoundException

occurred in Emgu.CV.dll First type exception occurred in Emgu.CV.dll An unhandled type System.TypeInitializationException

exception System.TypeInitializationException

occurred in Emgu. Cv.dll

Additional information: The type initializer for Emgu.CV.CvInvoke

threw an exception. "