Bug: cannot install PowerPivot if a SQL Server shared folder has been specified in a previous installation to other than the default folder
Clearly if you read my blog, you will see that as a development team we could have done a better job of testing all of the various installation combinations with SQL Server on ‘test servers’. Unfortunately, our limited test time was focused on production configurations; not on single demo machines. So as a result you can see some of our installation issues that have arisen. Recently we ran into another installation problem when a previous SQL Server installation has been done on a machine prior to installing PowerPivot.