I've been having some difficulties sharing my PP workbooks on SharePoint, my hosting company got back to me saying that they were created with SQL Server 2012 SP1 PowerPivot for Microsoft Excel 2010, and the version compatable with their SharePoint site is SQL Server 2008 R2 PowerPivot for Microsoft Excel 2010. One thing they noted was that I will have to recreate my data models.... I really cannot imagine having do to this. Is anyone familiar with this???