The report definition is not valid

Question

I have converted an .rdlc rerort from SSRS 2005 to SSRS 2008. Now when I am going to build that project I have got error.

The report defi

Answer 1

Just stumbled upon this question since I was having the same problem. In my case, I had a reference to an older version of ReportViewer.WinForms. When I switched versions, everything worked fine. Might not be the same case as yours, but just thought I'd chime in in case anyone else finds this page.