I am trying to open a PowerPoint presentation someone sent me. But when I double-click it, even though I see a dialog giving me a choice to Open or Save it, when I click Open, I see a Save As dialog with .ppt as the extension and the "Save as type:" field has only one choice and that is "Microsoft Office PowerPoint 97-2003 Presentation (*.ppt)"
If I save it as that type it doesn't open in Outlook. If I go to where I saved it and double-click it, it doesn't open also. If I click File > Save Attachments in the message and save it with .pptx extension, then go double-click it where I saved it, I get the same Save As dialog. If I open PowerPoint first, I can use File > Open and open the .pptx version but it doesn't open anyway.
I looked in Add/Remove Programs and the "Compatibility Pack for the
Office 2007 System" is there.