I tried opening the Lower Triangle document in Firefox on Kubuntu 14.04 (I really don't have MS Office) and it displayed in PowerPoint Online, but I'm not sure if this doc is complete since slides 14-24 are completely blank. I clicked on "Open in Powerpoint", then "Download My File", and LibreOffice showed the same blank slides. The End Effector doc looks good though. It might be missing a picture of routing the fan wires before snapping the 2 halves together, but that's a content thing; the file displays fine. Thank you very much for working on this!!!