"Object library invalid or contains references to object definitions that could not be found" or "Element not found"

After installing security advisory 960715 and opening a workbook with one of Visual Basic 6 ActiveX controls embedded in the workbook you receive an error:

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Blog TOC“Object library invalid or contains references to object definitions that could not be found” or “Element not found.”

For more information, see this post on the Visual Studio Office Developer Team’s blog. We want to get this message out to the most people possible.