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;

NullReferenceException when the document annotations are imported.

The RadPdfViewer throws ArgumentOutOfRangeException, when document is loaded.

Resolution: 
An exception message is shown when load the pdf document which contains unsupported encryption method. 

To reproduce:
When document that contain a specific formatting is imported there is some missing text.

PdfViewer - does not arrange correctly the layout of some pages.

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

1. Create a new project with RadPdfViewer. 

2. Try to load the pdf file from this ticket.

"Ñ" symbol is either rendered as a square, or it is not rendered at all.

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:
- Open the attached file with RadPdfViewer.

To reproduce:
-add RadPDFViewer and load a document that has an image for the background and some text over it. As a result RadPDFViewer does not render correctly the file.

To reproduce:

On a button click call the following method:

newPdfViewer.Print(True)

When the dialog opens click the Print button, without interacting with another component. You will notice that there will be no effect from your click. Click second time, you can now click.

Resolution: 

This is not with RadPdfView issue since the dialog is Windows dialog

For more information please refer to:

http://social.msdn.microsoft.com/Forums/windows/en-US/681a50b4-4ae3-407a-a747-87fb3eb427fd/first-mouse-click-after-showdialog-hits-the-parent-form?forum=winforms

http://stackoverflow.com/questions/2648977/c-sharp-windows-forms-print-dialog-box-click-ok-twice-to-respond

Line Style is not taken into consideration.

When you zoom the RadPdfViewer programatically when scrolling position is changed to another page.

radPdfViewer1.PdfViewerElement.Find("keyword", PageNumber);

Resolution: 
You can use the following code snippet: 
radPdfViewer1.PdfViewerElement.Find(string text, int pageNumber)

There is no workaround for this issue.