Rafał.Ś
I did a little more Google searching after my last post. The problem is not gone, its just waiting for specific conditions. The description of the problem is here where is shows up differently:
http://www.excel-first.com/cannot-open-pivot-table-source-file/
The cause appears to be related to the privacy setting and Document Inspector as summarized in this extract from the above line:
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The bug is caused by the Document Inspector…
Jon Peltier wrote an
article about this problem,
way back in 2010 and provided
a workaround developed by Bill Manville, which basically consists in:
◾
Make a copy of the worksheet with the old pivot table and pivot chart in a
different workbook;
◾
Move the copied worksheet back into the original workbook;
◾
Change the new chart’s source data to the new pivot table;
◾
Change the pivot table’s data source to the new range;
◾
Refresh the pivot table.
What if you have a large number of pivot tables and charts? You will have to
work hard to make all these steps for each pivot table and for each chart…
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I think the problem will show up when some user action changes this setting which I found in
[MS-OE376]:
Office Implementation Information for ECMA-376 Standards Support

Examples of such changes could be:
- sharing the workbook with a user who has a different version of excel
- changing the Document Inspector settings default
- changing the Document Inspector settings before sharing the document
- switching versions of excel yourself
- saving the spreadsheet as a different version format to share
- etc.
I haven't checked if these all cause the problem, but its probably the reason the problem is somewhat random.
As a minimum it looks like Microsoft should provide a warning of this setting on saving as to its effects and give the user a way to make the setting be what they need.