HSA - Sample code - Creating the queue failed

Hello. I am getting my machine setup with HSA for a project. I managed to follow the instruction installation steps at the HSA's Github page. I am now trying to run the sample program vector_copy. It gets so far and produces the error message "Creating the queue failed".

Image may be NSFW.
Clik here to view.

Have I gone wrong somewhere, perhaps missed a step?

The instructions at the HSA-Drivers-Linux-AMD repo has the step "Obtaining kernel and libhsakmt source code" and "Use the instructions in the following wiki page to built the Ubuntu kernel images: https://help.ubuntu.com/community/Kernel/Compile" - is this step required or can it be skipped?

Thanks.