Unable to export Excel 2007 in Cognos 10

Problem :
Received error message below when attempted to save to Excel 2007
ppdsweb/source/XtabOutput.cpp(327): CPPWebException: CCL_THROW: XtabOutput::doOutputppdsweb/source/XtabOutputXLSX.cpp(932): CPPWebException: CCL_THROW: XtabOutputXLSX::render()

Solution: 
Copy the ppwb folder from    
<GATEWAY_INSTALL>\webcontent\ppwb to                                  
<APPLICATION_TIER_INSTALL>\webcontent\ppwb

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