we use Telerik V2012.1.326.35 with VS2008 and we have a strange problem :(
Actually in our solution, in one of our project we added a RadPdfViewer in a XAML file. In code behind, on a RadButton click event, we call the following method :
private void loadDoc()
PdfDocumentSource newDoc = new PdfDocumentSource(new Uri(@"c:\MyDir\pdf2.pdf"));
PdfDoc.DocumentSource = newDoc;
I don't know why but I always received the follwing error message (see attached file).
If I move our method in a brand new solution and project, it work!!! I checked all Telerik files and they are the same in both projects.