The workbook contains an unsupported PowerPivot model. The PowerPivot model in the workbook is in the SQL Server 2008 R2 ...

The workbook contains an unsupported PowerPivot model. The PowerPivot model in the workbook is in the SQL Server 2008 R2 PowerPivot for Excel 2010 format. Supported PowerPivot models are the following: SQL Server 2012 PowerPivot for Excel 2010, SQL Server 2012 PowerPivot for Excel 2013, or higher versions. To upgrade the workbook and the model it contains, download and open the workbook in one of the supported versions of PowerPivot.  Then save the workbook and upload it to the SharePoint server. For more information, go to (http://go.microsoft.com/fwlink/?LinkId=398715).