I am getting an error: Automation Error. Can the BuiltinDocumentProperties
only be used with ThisWorkbook? I can't get it to work with the workbook
wbkDataSource.

If wbkDataSource.BuiltinDocumentProperties("Last Save Time") + TimeSerial(0,
10, 0) < Date Then
'do something
End If

Any ideas?

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Cheers,
Ryan