NullPointerException problem when trying to view GUI in SDK

Hello folks,

I installed today the latest version of the Jmonkeyplatform (Windows x64) mainly to create GUI with the built-in Nifty editor and previewer.
Alas, no render is done because of a NullPointerException, and I cannot add any component (buttons, etc) to it.

Here’s the log :

Running on jMonkeyEngine 3.0.10
Lwjgl 2.9.0 context running on thread LWJGL Renderer Thread
Adapter: nvd3dumx,nvwgf2umx,nvwgf2umx
Driver Version: 10.18.13.5850
Vendor: NVIDIA Corporation
OpenGL Version: 4.5.0 NVIDIA 358.50
Renderer: GeForce GTX 660/PCIe/SSE2
GLSL Ver: 4.50 NVIDIA
Audio Device: OpenAL Soft
Audio Vendor: OpenAL Community
Audio Renderer: OpenAL Soft
Audio Version: 1.1 ALSOFT 1.15.1
AudioRenderer supports 64 channels
Audio effect extension version: 1.0
Audio max auxilary sends: 4
Returning hash code of content
Returning hash code of content
Checking page id 1 387 040 574 vs stored id 1 387 040 574

java.lang.NullPointerException
	at jada.ngeditor.controller.GUIEditor.saveGui(GUIEditor.java:178)
	at com.jme3.gde.gui.NiftyGuiVisualElement.componentHidden(NiftyGuiVisualElement.java:271)
	at org.netbeans.core.multiview.MultiViewPeer.hideElement(MultiViewPeer.java:340)
	at org.netbeans.core.multiview.MultiViewPeer$SelectionListener.selectionChanged(MultiViewPeer.java:749)
	at org.netbeans.core.multiview.MultiViewModel.fireSelectionChanged(MultiViewModel.java:246)
	at org.netbeans.core.multiview.MultiViewModel.setActiveDescription(MultiViewModel.java:118)
	at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:296)
	at javax.swing.JToggleButton$ToggleButtonModel.setSelected(JToggleButton.java:254)
	at javax.swing.ButtonGroup.setSelected(ButtonGroup.java:164)
	at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:292)
	at org.netbeans.core.multiview.TabsComponent$ButtonMouseListener.mousePressed(TabsComponent.java:424)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:280)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)
	at java.awt.Component.processMouseEvent(Component.java:6502)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
	at java.awt.Component.processEvent(Component.java:6270)
	at java.awt.Container.processEvent(Container.java:2229)
	at java.awt.Component.dispatchEventImpl(Component.java:4861)
	at java.awt.Container.dispatchEventImpl(Container.java:2287)
	at java.awt.Component.dispatchEvent(Component.java:4687)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4489)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
	at java.awt.Container.dispatchEventImpl(Container.java:2273)
	at java.awt.Window.dispatchEventImpl(Window.java:2719)
	at java.awt.Component.dispatchEvent(Component.java:4687)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
	at java.awt.EventQueue.access$200(EventQueue.java:103)
	at java.awt.EventQueue$3.run(EventQueue.java:694)
	at java.awt.EventQueue$3.run(EventQueue.java:692)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.awt.EventQueue$4.run(EventQueue.java:708)
	at java.awt.EventQueue$4.run(EventQueue.java:706)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
	at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

Any idea of how to fix it?

Take a look to this :wink: