The system cannot find the file specified.I am mystified: I do not understand the connection between a report's data source and this library; I know that the correct version (1.2.1269.0) is in binPdfSharp.dll; and I can find no references to any version of PdfSharp in any file in my application, other than the code that actually calls it (ie, there are no references to it in web.config or the .rdlc