FULL PRODUCT VERSION :


A DESCRIPTION OF THE PROBLEM :
At some moment java application displayed empty error dialog box and became completely unresponsive.

Log of the application was full of the following exception reports:

com.quintiq.client.service.delta.QGUIUpdateRunnable: Error occurred while updating the user interface. - java.lang.NullPointerException
at java.awt.image.FilteredImageSource.startProduction(Unknown Source)
at java.awt.image.FilteredImageSource.startProduction(Unknown Source)
at sun.awt.image.ImageRepresentation.startProduction(Unknown Source)
at sun.awt.image.ToolkitImage.addWatcher(Unknown Source)
at sun.awt.image.ToolkitImage.getProperty(Unknown Source)
at javax.swing.ImageIcon.<init>(Unknown Source)
at com.quintiq.client.gui.list.QHeaderCellRenderer.getIcon(QHeaderCellRenderer.java:39)
...
at com.quintiq.client.service.delta.QGUIUpdateRunnable.run(QGUIUpdateRunnable.java:32)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)



REPRODUCIBILITY :
This bug can be reproduced rarely.