Hangs on Cleaning up Temporary Files

It is interesting that you mention it might actually be a PowerPoint problem. This reminded me that a few weeks ago I also had trouble printing a different PowerPoint file to PDF in Notes Page view, when printing just the slides to PDF without the notes worked fine. I had forgotten about that, but it lends credence to the fact that PowerPoint 2016, not Articulate, is the problem. My work-around there was to print in batches of 10 slides at a time and then recombine everything into one PDF. It was tedious, but it worked. Obviously I can't do that same type of workaround for an Articulate Presentation.