Recently there have been a couple of cases where users could not get the OpenCV example in SDK 2.0's Getting Started guide to work. This was because the script referenced a file called rsutil.hpp that did not exist.
Progress towards fixing this is being made. The instructions have now been updated, replacing this file with a new include.
// include OpenCV header file
The new include reference (the file opencv.hpp in a folder called opencv2) is apparently not in the file structure of version 2,80 of SDK 2.0, so will probably be introduced in the next release.