Lee - 2008-06-26

Hi all,

I got below error message after I pressed the "Save Document As".

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at com.pt.io.FileList$Dfs.<init>(Unknown Source)
        at com.pt.io.FileList.depthFirstIterator(Unknown Source)
        at com.pt.io.FileList.iterator(Unknown Source)
        at com.pt.io.FileList.copy(Unknown Source)
        at multivalent.std.ui.SaveAs.semanticEventAfter(SaveAs.java:91)
        at multivalent.Layer.semanticEventAfter(Layer.java:637)
        at multivalent.Layer.semanticEventAfter(Layer.java:637)
        at multivalent.Layer.semanticEventAfter(Layer.java:637)
        at multivalent.Browser.event(Browser.java:941)
        at multivalent.Browser.processEvent(Browser.java:841)
        at java.awt.Component.dispatchEventImpl(Component.java:4413)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4243)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        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)
saving history

After than, system will be hangs. What is the problems ? Please help.

Regards,
Lee