Popup problem

[orribl]

Hi,
I want to print a rich:dataTable (with rich:dataScroller) and therefore I want to open a popup with this dataTable. I do this using a commandLink with javascript. I want to offer 2 printing options: 'print current page' and 'print all':

<a4j:commandLink
 style="padding:5px"
 action="#{mse.printPage}"
 oncomplete="window.open(
 'mse_print.faces',
 'popupWindowName',
 'dependent=yes, menubar=no, toolbar=no, scrollbars=yes'
 );"
 value="#{msg.print_page}"
/>
<a4j:commandLink
 style="padding:5px"
 action="#{mse.printAll}"
 oncomplete="window.open(
 'mse_print.faces',
 'popupWindowName',
 'dependent=yes, menubar=no, toolbar=no, scrollbars=yes'
 );"
 value="#{msg.print_all}"
/>

Here are the 2 methods:

public void printAll() {
 try{
 //Backing bean with print datatable
 Print print = new Print();
 //Create new HtmlDataTable
 HtmlDataTable htmlDataTable = new HtmlDataTable();
 //Set value of created dataTable
 htmlDataTable.setValue(this.mseItems);
 //Put backing bean to sessionMap
 FacesContext.getCurrentInstance().
 getExternalContext().getSessionMap().put("print", print);
 } catch ( Exception ex ){
 ex.printStackTrace();
 }
 }
}
...
//2nd method is similar

When I click the link, the popup opens and everything works fine.
when I close the popup and send a new ajax-request to the server, an alert-message appears: 'viewstate could't be restored'.
I'm using Richfaces 3.0.1; I also tried 3.1.0 and it worked, but I couldn't use it because of the problem described here: http://jboss.com/index.html?module=bb&op=viewtopic&t=120099