Hello and apologies for the late reply. Can you explain why it isn't working and I'll do my best to fix the problem if possible.
Right clicking the below where the InfiniteImagery files are and opening the terminal from there will start the terminal in that folder, which will mean that the command I wrote will work.
Opening the terminal from the run menu using Windows + R will start you somewhere else (I assume your home folder), and you will have to navigate to the Infinite Imagery folder using the 'cd' command if you know how to do that.