Error details:
Error occurred during application-update (25)
java.lang.IllegalStateException: Scene graph is not properly updated for rendering.
State was changed after rootNode.updateGeometricState() call.
Make sure you do not modify the scene from another thread!
Problem spatial name: blocks
at com.jme3.scene.Spatial.checkCulling(Spatial.java:360)
at com.jme3.scene.Geometry.checkCulling(Geometry.java:137)
at commons.c.a(SourceFile:538)
at commons.c.a(SourceFile:550)
at commons.c.a(SourceFile:550)
at commons.c.a(SourceFile:550)
at commons.c.a(SourceFile:550)
at commons.c.renderScene(SourceFile:533)
at commons.c.renderViewPort(SourceFile:644)
at commons.c.a(SourceFile:698)
at commons.c.render(SourceFile:685)
at commons.JIWApplication.update(SourceFile:341)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.runLoop(LwjglAbstractDisplay.java:151)
at com.jme3.system.lwjgl.LwjglDisplay.runLoop(LwjglDisplay.java:197)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:232)
at java.lang.Thread.run(Unknown Source)
das war gleich nach der installation...dasnn ging es super bis heute...was oben steht