Hey dave,
When running the tests I get the same error as with Mythruna on the TestNiftyToMesh test.
Here is the output if any of it is helpful (sorry about the wall of text, wanted to make sure everything was there):
05-Aug-2011 05:59:32 jme3test.TestChooser start
INFO: Composing Test list...
05-Aug-2011 05:59:32 jme3test.TestChooser find
INFO: Searching for Demo classes in "jme3test".
05-Aug-2011 05:59:45 com.jme3.system.JmeSystem initialize
INFO: Running on jMonkey Engine 3 Alpha 0.6
05-Aug-2011 05:59:45 com.jme3.system.Natives extractNativeLibs
INFO: Extraction Directory #1: file:/C:/Program%20Files/jmonkeyplatform/jmonkeyplatform/libs/
05-Aug-2011 05:59:45 com.jme3.system.Natives extractNativeLibs
INFO: Extraction Directory #2: C:\Users\l\Documents\jMonkeyProjects\JmeTests
05-Aug-2011 05:59:45 com.jme3.system.Natives extractNativeLibs
INFO: Extraction Directory #3: C:\Users\l\Documents\jMonkeyProjects\JmeTests
05-Aug-2011 05:59:45 com.jme3.system.lwjgl.LwjglAbstractDisplay run
INFO: Using LWJGL 2.7.1
05-Aug-2011 05:59:45 com.jme3.system.lwjgl.LwjglDisplay createContext
INFO: Selected display mode: 800 x 600 x 0 @0Hz
05-Aug-2011 05:59:45 com.jme3.system.lwjgl.LwjglAbstractDisplay initInThread
INFO: Display created.
05-Aug-2011 05:59:45 com.jme3.system.lwjgl.LwjglAbstractDisplay initInThread
INFO: Adapter: igdumd64
05-Aug-2011 05:59:45 com.jme3.system.lwjgl.LwjglAbstractDisplay initInThread
INFO: Driver Version: 8.15.10.1892
05-Aug-2011 05:59:45 com.jme3.system.lwjgl.LwjglAbstractDisplay initInThread
INFO: Vendor: Intel
05-Aug-2011 05:59:45 com.jme3.system.lwjgl.LwjglAbstractDisplay initInThread
INFO: OpenGL Version: 2.1.0 - Build 8.15.10.1892
05-Aug-2011 05:59:45 com.jme3.system.lwjgl.LwjglAbstractDisplay initInThread
INFO: Renderer: Mobile Intel(R) 4 Series Express Chipset Family
05-Aug-2011 05:59:45 com.jme3.system.lwjgl.LwjglAbstractDisplay initInThread
INFO: GLSL Ver: 1.20 - Intel Build 8.15.10.1892
05-Aug-2011 05:59:45 com.jme3.system.lwjgl.LwjglTimer <init>
INFO: Timer resolution: 1000 ticks per second
05-Aug-2011 05:59:45 com.jme3.renderer.lwjgl.LwjglRenderer initialize
INFO: Caps: [FrameBuffer, FrameBufferMRT, OpenGL20, OpenGL21, ARBprogram, GLSL100, GLSL110, GLSL120, VertexTextureFetch, FloatTexture, FloatColorBuffer]
05-Aug-2011 05:59:45 com.jme3.asset.DesktopAssetManager <init>
INFO: DesktopAssetManager created.
05-Aug-2011 05:59:45 com.jme3.renderer.Camera <init>
INFO: Camera created (W: 800, H: 600)
05-Aug-2011 05:59:45 com.jme3.renderer.Camera <init>
INFO: Camera created (W: 800, H: 600)
05-Aug-2011 05:59:45 com.jme3.input.lwjgl.LwjglMouseInput initialize
INFO: Mouse created.
05-Aug-2011 05:59:45 com.jme3.input.lwjgl.LwjglKeyInput initialize
INFO: Keyboard created.
05-Aug-2011 05:59:46 com.jme3.audio.lwjgl.LwjglAudioRenderer initInThread
INFO: AudioRenderer supports 64 channels
05-Aug-2011 05:59:46 com.jme3.audio.lwjgl.LwjglAudioRenderer initInThread
INFO: Audio effect extension version: 1.0
05-Aug-2011 05:59:46 com.jme3.audio.lwjgl.LwjglAudioRenderer initInThread
INFO: Audio max auxilary sends: 1
05-Aug-2011 05:59:46 com.jme3.material.MaterialDef <init>
INFO: Loaded material definition: Unshaded
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Gui Node)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (BitmapFont) attached to this node (null)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (null) attached to this node (Statistics View)
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (Statistics View) attached to this node (Gui Node)
05-Aug-2011 05:59:46 com.jme3.renderer.Camera <init>
INFO: Camera created (W: 1,024, H: 768)
05-Aug-2011 05:59:46 com.jme3.material.MaterialDef <init>
INFO: Loaded material definition: Default GUI
05-Aug-2011 05:59:46 de.lessvoid.nifty.screen.Screen <init>
INFO: Missing ScreenController for screen [null] using DefaultScreenController() instead but this might not be what you want.
05-Aug-2011 05:59:46 de.lessvoid.nifty.Nifty loadFromFile
INFO: loadFromFile [jme3test/niftygui/hellojme.xml]
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.NiftyLoader loadNiftyXml
INFO: loading new nifty xml file with schemaId [nifty.nxs]
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.NiftyLoader loadNiftyXml
INFO: loaded nifty xml file with schemaId [nifty.nxs] took [38 ms]
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.types.NiftyType create
INFO: debug out [0]
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.types.NiftyType create
INFO: resourceBundles [0]
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.types.NiftyType create
INFO: registerStyle [0]
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.types.NiftyType create
INFO: registerControlDefinition [0]
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.types.NiftyType create
INFO: registerEffect [0]
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.types.NiftyType create
INFO: registerSound [0]
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.types.NiftyType create
INFO: registerMusic [0]
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.types.NiftyType create
INFO: registerMouseCursor [0]
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.types.NiftyType create
INFO: registerPopup [0]
05-Aug-2011 05:59:46 de.lessvoid.xml.tools.ClassHelper getInstance
WARNING: class [de.lessvoid.nifty.examples.helloworld.HelloWorldStartScreen] could not be instanziated (java.lang.ClassNotFoundException: de.lessvoid.nifty.examples.helloworld.HelloWorldStartScreen)
05-Aug-2011 05:59:46 de.lessvoid.nifty.screen.Screen <init>
INFO: Missing ScreenController for screen [start] using DefaultScreenController() instead but this might not be what you want.
05-Aug-2011 05:59:46 de.lessvoid.nifty.loaderv2.types.ScreenType create
INFO: internal prepare screen (start) [4]
05-Aug-2011 05:59:46 com.jme3.asset.DesktopAssetManager loadAsset
WARNING: Cannot locate resource: aurulent-sans-17.fnt
java.lang.NullPointerException
at com.jme3.font.BitmapText.<init>(BitmapText.java:64)
at com.jme3.font.BitmapText.<init>(BitmapText.java:56)
at com.jme3.niftygui.RenderFontJme.<init>(RenderFontJme.java:55)
at com.jme3.niftygui.RenderDeviceJme.createFont(RenderDeviceJme.java:116)
at de.lessvoid.nifty.render.NiftyRenderEngineImpl.createFont(NiftyRenderEngineImpl.java:166)
at de.lessvoid.nifty.loaderv2.types.apply.Convert.font(Convert.java:35)
at de.lessvoid.nifty.loaderv2.types.apply.ApplyRenderText.apply(ApplyRenderText.java:23)
at de.lessvoid.nifty.elements.Element.initializeFromAttributes(Element.java:338)
at de.lessvoid.nifty.loaderv2.types.ElementType.applyAttributes(ElementType.java:217)
at de.lessvoid.nifty.loaderv2.types.ElementType.applyStandard(ElementType.java:171)
at de.lessvoid.nifty.loaderv2.types.ElementType.create(ElementType.java:143)
at de.lessvoid.nifty.loaderv2.types.ElementType.applyChildren(ElementType.java:250)
at de.lessvoid.nifty.loaderv2.types.ElementType.applyStandard(ElementType.java:174)
at de.lessvoid.nifty.loaderv2.types.ElementType.create(ElementType.java:143)
at de.lessvoid.nifty.loaderv2.types.ElementType.applyChildren(ElementType.java:250)
at de.lessvoid.nifty.loaderv2.types.ElementType.applyStandard(ElementType.java:174)
at de.lessvoid.nifty.loaderv2.types.ElementType.create(ElementType.java:143)
at de.lessvoid.nifty.loaderv2.types.ScreenType.create(ScreenType.java:71)
at de.lessvoid.nifty.loaderv2.types.NiftyType.create(NiftyType.java:137)
at de.lessvoid.nifty.Nifty.loadFromFile(Nifty.java:468)
at de.lessvoid.nifty.Nifty.fromXml(Nifty.java:369)
at jme3test.niftygui.TestNiftyToMesh.simpleInitApp(TestNiftyToMesh.java:65)
at com.jme3.app.SimpleApplication.initialize(SimpleApplication.java:218)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.initInThread(LwjglAbstractDisplay.java:138)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:206)
at java.lang.Thread.run(Thread.java:662)
05-Aug-2011 05:59:46 de.lessvoid.nifty.Nifty gotoScreen
INFO: gotoScreen [start]
05-Aug-2011 05:59:46 de.lessvoid.nifty.Nifty gotoScreenInternal
INFO: gotoScreenInternal [start]
05-Aug-2011 05:59:46 de.lessvoid.nifty.screen.Screen <init>
INFO: Missing ScreenController for screen [null] using DefaultScreenController() instead but this might not be what you want.
05-Aug-2011 05:59:46 de.lessvoid.nifty.Nifty gotoScreenInternal
WARNING: screen [start] not found
05-Aug-2011 05:59:46 com.jme3.material.MaterialDef <init>
INFO: Loaded material definition: Plain Texture
05-Aug-2011 05:59:46 com.jme3.material.Material checkSetParam
WARNING: Material parameter m_ColorMap uses a deprecated naming convention use ColorMap instead
05-Aug-2011 05:59:46 com.jme3.scene.Node attachChild
INFO: Child (Box) attached to this node (Root Node)
05-Aug-2011 05:59:46 com.jme3.renderer.lwjgl.LwjglRenderer setFrameBuffer
SEVERE: Problem FBO:
FrameBuffer[format=1024x768x1, drawBuf=0]
Depth => BufferTarget[format=Depth]
Color(0) => TextureTarget[format=RGB8]
05-Aug-2011 05:59:46 com.jme3.app.Application handleError
SEVERE: Uncaught exception thrown in Thread[LWJGL Renderer Thread,6,main]
java.lang.IllegalStateException: Incomplete draw buffer.
at com.jme3.renderer.lwjgl.LwjglRenderer.checkFrameBufferError(LwjglRenderer.java:1135)
at com.jme3.renderer.lwjgl.LwjglRenderer.setFrameBuffer(LwjglRenderer.java:1381)
at com.jme3.renderer.RenderManager.renderViewPort(RenderManager.java:701)
at com.jme3.renderer.RenderManager.render(RenderManager.java:739)
at com.jme3.app.SimpleApplication.update(SimpleApplication.java:249)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.runLoop(LwjglAbstractDisplay.java:158)
at com.jme3.system.lwjgl.LwjglDisplay.runLoop(LwjglDisplay.java:203)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:221)
at java.lang.Thread.run(Thread.java:662)