While working on FlowChart connected with Overview, I got this exception:

Exception in thread "AWT-EventQueue-0" java.util.NoSuchElementException
       at java.util.AbstractList$Itr.next(AbstractList.java:350)
       at com.mindfusion.jdiagram.FlowChart.drawShadows(Unknown Source)
       at com.mindfusion.jdiagram.FlowChart.drawFlowChart(Unknown Source)
       at com.mindfusion.jdiagram.FlowChart.drawFlowChart(Unknown Source)
       at com.mindfusion.jdiagram.FlowChart.paintComponent(Unknown Source)
       at javax.swing.JComponent.paint(JComponent.java:1022)
       at javax.swing.JComponent.paintToOffscreen(JComponent.java:5104)
       at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:
1386)
       at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1317)
       at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:301
)
       at javax.swing.RepaintManager.paint(RepaintManager.java:1132)
       at javax.swing.JComponent._paintImmediately(JComponent.java:5052)
       at javax.swing.JComponent.paintImmediately(JComponent.java:4862)
       at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:727)
       at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:683)
       at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:663)
       at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueU
tilities.java:128)
       at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
       at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
       at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273
)
       at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
       at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173
)
       at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
       at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
       at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

what can be the reason?
Thanks,
Yoav

Can you please explain? What is a drawing-related event handler? Do you mean your supplied draw methods (in FlowChart) or other swing events?