#7 java.lang.NullPointerException

[hira tabasum]

java.lang.NullPointerException
i have try run aspectj in JBuilder 2005 and all times it shows the exception:
Message: AJDE failed to initialize.

Message: Could not toggle AJDE integration.
Stack trace: java.lang.NullPointerException at org.aspectj.tools.ajde.jbuilder.JBuilderManager.init(Unknown Source) at org.aspectj.tools.ajde.jbuilder.AJEnableAjdeAction.actionPerformed(Unknown Source) at com.borland.primetime.ide.BrowserAction.actionPerformed(Unknown Source) at com.borland.primetime.actions.ActionButton.a(Unknown Source) at com.borland.primetime.actions.ActionButton.fire(Unknown Source) at com.borland.primetime.actions.ActionButton.processMouseEvent(Unknown Source) at java.awt.Component.processEvent(Component.java:4897) at java.awt.Container.processEvent(Container.java:1569) at java.awt.Component.dispatchEventImpl(Component.java:3615) at java.awt.Container.dispatchEventImpl(Container.java:1627) at java.awt.Component.dispatchEvent(Component.java:3477) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128) at java.awt.Container.dispatchEventImpl(Container.java:1613) at java.awt.Window.dispatchEventImpl(Window.java:1606) at java.awt.Component.dispatchEvent(Component.java:3477) at java.awt.EventQueue.dispatchEvent(EventQueue.java:456) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137) at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)