I can confirm this install worked for me and could run the dk scripts. However, there seems to be some steps missing for anyone wanting to follow this exactly, eg, I use the ‘source’ command after changes to .bashrc, need to mkdir ‘courseRoot’, need to include the dk install.
Also, I could not get sim_vehicle.py going and I thought it was installed with the ardupilot install. So there must be another step I am missing.