OK, CvRunningAvg() seems to be a function from the Emgu OpenCV .NET implementation. You might have more luck posting this problem on their discussion forum at http://www.emgu.com/forum/viewforum.php?f=8, since there will be many more people familiar with this specific set of libraries there.
A piece of advice though: They're definitely going to ask you what the error in the terminal is, so I'd post that in the question that you ask there too.
The mainstream library (http://sourceforge.net/projects/opencvlibrary/) does work under C++, and a couple of people around here are familiar with it (I've built against it before, but nothing fancy), but I agree with ravenous that it would be helpful to see the compiler error.
I am working creating a fully encapsulated, homogeneous singly linked data structure. The Listing class and SinglyLinkedList class that are part of the whole application compile fine, but the problem ...