I've got a guess. That DLL is part of the Microsoft C Runtime engine (CRT). Specifically, the debug version. The CRT is often installed on a computer by an application, so it often exists after you've installed a few apps (although the specific version might not be there - note that this is the 6.0 version of the CRT).
However, the debug version of the CRT is typically only installed by Visual Studio.
So, I am guessing that the DLL you are trying to call is a debug build of the code. Try copying over the release version instead.