java.lang.NullPointerException

	at java.util.Hashtable.put(Unknown Source)

	at com.bbn.openmap.tools.dnd.DefaultDnDCatcher.setLayers(DefaultDnDCatcher.java:472)

	at com.bbn.openmap.tools.dnd.DefaultDnDCatcher.setLayers(DefaultDnDCatcher.java:483)

	at com.bbn.openmap.event.LayerSupport.fireLayer(LayerSupport.java:86)

	at com.bbn.openmap.LayerHandler.setLayers(LayerHandler.java:416)

	at com.bbn.openmap.LayerHandler.addLayer(LayerHandler.java:628)

	at com.bbn.openmap.LayerHandler.addLayer(LayerHandler.java:574)

	at com.bbn.openmap.LayerHandler.findAndInit(LayerHandler.java:860)

	at com.bbn.openmap.MapHandlerChild.childrenAdded(MapHandlerChild.java:114)

	at java.beans.beancontext.BeanContextSupport.fireChildrenAdded(Unknown Source)

	at java.beans.beancontext.BeanContextSupport.add(Unknown Source)

	at com.bbn.openmap.MapHandler.add(MapHandler.java:182)

	at SiteMap.init(SiteMap.java:66)

	at sun.applet.AppletPanel.run(Unknown Source)

	at java.lang.Thread.run(Unknown Source)