java.lang.NullPointerException
	at org.jboss.tools.vpe.editor.VpeVisualDomBuilder.getLastAppreciableVisualChild(VpeVisualDomBuilder.java:1882)
	at org.jboss.tools.vpe.editor.VpeVisualDomBuilder.getInnerDropInfo(VpeVisualDomBuilder.java:1743)
	at org.jboss.tools.vpe.editor.VpeController.canInnerDrop(VpeController.java:2202)
	at org.jboss.tools.vpe.dnd.VpeDnD.dragOver(VpeDnD.java:157)
	at org.jboss.tools.vpe.editor.VpeController.dragOver(VpeController.java:2038)
	at org.jboss.tools.vpe.editor.mozilla.MozillaDomEventListener.handleEvent(MozillaDomEventListener.java:181)
	at org.mozilla.xpcom.internal.XPCOMJavaProxy.callXPCOMMethod(Native Method)
	at org.mozilla.xpcom.internal.XPCOMJavaProxy.invoke(XPCOMJavaProxy.java:143)
	at $Proxy34.invokeDragSession(Unknown Source)
	at org.jboss.tools.vpe.dnd.VpeDnD.startDragSession(VpeDnD.java:64)
	at org.jboss.tools.vpe.editor.VpeController.startDragSession(VpeController.java:2757)
	at org.jboss.tools.vpe.editor.VpeController.dragGesture(VpeController.java:1070)
	at org.jboss.tools.vpe.editor.mozilla.MozillaDomEventListener.handleEvent(MozillaDomEventListener.java:167)
	at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2265)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3291)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
	at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:169)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:508)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:447)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1173)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1148)