64-bit vs 32-bit Office
If Office 2010 is already installed on your computer, here's how you can tell whether it's compatible with PPTools add-ins:
Click File then click Help. On the right side of the resulting window, you'll see an area that looks like this:
Beneath About Microsoft PowerPoint you'll see the Version number followed by either (32-bit) or (64-bit) in parentheses (the area outlined in orange above).
That tells you whether you have 32-bit or 64-bit Office 2010.
If you have an earlier version of Office than 2010, it's 32-bit.
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