Storyline 360 - PowerPoint import not working

Hi Ms. McKerchie,

Thank you for your reply. I submitted a case at that link's destination you provided. One of your Customer Support Engineers (Mr. C. Morales) contacted me via email and I uploaded one of my .pptx files to him. I am awaiting his reply.

For the benefit of others who may be reading this, I also followed the guidance in one of the support articles from Articulate and uninstalled then reinstalled Storyline 360. No luck, the same error message persists. I also attempted to import a single slide from the original .pptx file with very little content on it as well as a completely different .pptx file and, again, same error message.  Very perplexed at this point.

(Sidebar moaning here: I despise Windows and really wish Articulate would develop a version of Storyline native for Mac. Thanks for listening!)