The Report which you are using is built on new power pivot version, for this reason reports are not working on old power pivot version and showing below error message.
The Report which you are using is built on new power pivot version, for this reason reports are not working on old power pivot version and showing below error message.
Resolution: Please install new version of power pivot (i.e. 11.0.2100.60) from below link.
http://www.microsoft.com/en-us/download/details.aspx?id=29074
Impact : If you are installed new power pivot version from above link existing reports which are built on old Power pivot will open with the below message in a dialogue box
Saying that “Do you want Upgrade the workbook”, if you click on OK the report will work fine.