To reproduce:
Open the attached document. You will see that it will be rendered blank due to the NotSupportedException

Resolution: 
This is an unsupported font from our engine. In debug the SL PDF also throw this exception, since the engine does not support this font type. WinForms PDF rendered this documents with delay.

To reproduce:

On a button click call the following method:

radPdfViewer.Print(true);

Select the CurrentPage radio button in the showed dialog and click print. You will see the IndexOutOfRange exception.



Workaround:

When the dialog opens select the Pages radio button and and type in the page you want to print

To reproduce:
1.Load a document
2.Click the print button on the RadPdfViewerNavigator

Please refer to the attached gif file. The sample pdf file is attached as well.

To reproduce: 
1. Drag and drop RadPdfViewer and RadPdfViewerNavigator
2. Load attached file from ticket
3. Click PrintPreview button from navigator and you will see that NullRefference exception is thrown. 

Workaround: 
You can set the ShowPrintPreview property to false of RadPrintViewNavigator
this.radPdfViewerNavigator1.ShowPrintPreview = false;

If the document is using fonts that are not embedded and are not installed on client machine the text is not displayed.
 

Workaround: update manually the RadPdfViewerNavigator.CurrentPageTextBox.

To reproduce:

public Form1()
{
    InitializeComponent();

    radPdfViewer1.DocumentLoaded += radPdfViewer1_DocumentLoaded;
    radPdfViewer1.LoadDocument(@"..\..\TestDocument.pdf");
}

void radPdfViewer1_DocumentLoaded(object sender, EventArgs e)
{
    var pdfViewerElement = sender as RadPdfViewerElement;

    if (pdfViewerElement != null)
    {
        var myDocumentToPrint = new RadPrintDocument();
        myDocumentToPrint.AssociatedObject = pdfViewerElement;
        myDocumentToPrint.DefaultPageSettings.Margins = new System.Drawing.Printing.Margins(0, 0, 0, 0);
        myDocumentToPrint.Print();
    }
}
 
Please refer to the attached screenshots and sample pdf.

Workaround:  Specify the RadPrintDocument.DefaultPageSettings.Margins property on a way to have the right margin greater than 0 

The PdfPrintPreviewDialog should allow the end user to resize it and the page preview in it should scale accordingly. This would allow the user to have a better preview of the print settings.

http://docs.telerik.com/devtools/wpf/controls/radpdfviewer/document-model/exceptionhandling