Paperstack add-on creating Out of sync problem

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[/left]Hi sir,

     In my vaadin project , i used paperstack add-on in two classes. It works properly for sometimes.Then it says Out of sync error . If i remove paperstack 
     add-on from layout , then there is no Out of sync error . Actually i added paperstack component with Horizontal split panel.
     
     Actually i already facing this problem in my last project . There  i faced this problem while opening two tabs in same Browser.I solved that problem
     by  removing all static variables and using multitab supporting concept and synchronizing all background threads. But this time it happens in a   
     application opened in a single tab in a single browser. 

Please give some solution .

Thank you sir.

I don’t know the paperstack-addon, but a “Out of Sync” is always caused by a no longer visible / existing component receiving an update from the server-side. Best way to debug this is giving your components debug-ids (setDebugId()) and checking the server-log for “ignored variable-burst”-messages.

Hai sir ,

      I did what you said. I have given all components debug id's .While out of sync error comes, server log says

     Nov 03, 2012 2:55:31 PM com.vaadin.terminal.gwt.server.AbstractCommunicationManager handleVariableBurst
     WARNING: Warning: Ignoring variable change for non-existent component, VAR_PID=PID_SPaperstack
     Nov 03, 2012 2:55:31 PM com.vaadin.terminal.gwt.server.AbstractCommunicationManager handleVariableBurst
     WARNING: Warning: Ignoring variable change for non-existent component, VAR_PID=PID_SPaperstack
     Nov 03, 2012 3:42:45 PM com.vaadin.terminal.gwt.server.AbstractCommunicationManager handleVariableBurst
     WARNING: Warning: Ignoring variable change for non-existent component, VAR_PID=PID_SPaperstack
     Nov 03, 2012 3:43:34 PM com.vaadin.terminal.gwt.server.AbstractCommunicationManager handleVariableBurst
     WARNING: Warning: Ignoring variable change for non-existent component, VAR_PID=PID_SPaperstack
     Nov 03, 2012 3:44:42 PM com.vaadin.terminal.gwt.server.AbstractCommunicationManager handleVariableBurst
     WARNING: Warning: Ignoring variable change for non-existent component, VAR_PID=PID_SPaperstack



     This shows the add-on Paperstack causes the out of sync problem.


     What can i do to solve this problem sir ?

I have a problem below: the error occur when the system manipulate lots of data. i don’t know how to fix it?

May 6, 2013 4:47:24 PM com.vaadin.terminal.gwt.server.AbstractCommunicationManager handleVariableBurst
WARNING: Warning: Ignoring variable change for non-existent component, VAR_PID=PID133
May 6, 2013 4:47:24 PM com.vaadin.terminal.gwt.server.AbstractCommunicationManager handleVariableBurst
WARNING: Warning: Ignoring variable change for non-existent component, VAR_PID=PID133

Thanks.

which version of vaadin can be done this tag in web.xml:
com.vaadin.terminal.gwt.server.GAEApplicationServlet
please help me?