Can't import PowerPoint slides into Storyline 360.

I am new to Articulate and am working on my first project.  I need to import a few PPT files into Storyline 360 but am not having any success.  I get the failed message each time.  I am a mac user so I am using Parallels.  I think this may be part of the reason, but I am not sure.  I am a college student and the University provides Microsoft Office for free, but I don't really know which version.  I went through the article and could not find a specific reason why mine won't work.  The PPT is stored on my desktop, everything should be updated.  Attached is the PPT.

Thanks