Hey anyone, I get an error Java alert whenever i close the checkers window, i get the following message: -

Application Error

General Exception

Name:

    mp

java.lang.NullPointerException: null pData

at sun.awt.windows.WComponentPeer.hide(Native Method)
	at java.awt.Component.hide(Unknown Source)
	at java.awt.Window.hide(Unknown Source)
	at sun.awt.EmbeddedFrame.hide(Unknown Source)
	at java.awt.Window$1DisposeAction.run(Unknown Source)
	at java.awt.Window.doDispose(Unknown Source)
	at java.awt.Window.dispose(Unknown Source)
	at sun.plugin.viewer.frame.IExplorerEmbeddedFrame.windowClosed(Unknown Source)
	at java.awt.Window.processWindowEvent(Unknown Source)
	at java.awt.Window.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(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)