Created attachment 532 [details]
crash log

The following will show a NEWT-window on OSX 10.9, JDK 1.7_u40. But when closing the window there is a crash in native code.

public static void main(String[] args) { 
                final GLCapabilities caps = new GLCapabilities(GLProfile.get(GLProfile.GL4)); 
                caps.setBackgroundOpaque(true); 
                caps.setDoubleBuffered(true); 
                caps.setDepthBits(16); 
                GLWindow glWindow = GLWindow.create(caps); 
                glWindow.addGLEventListener(new GLEventListener() { 
                        @Override 
                        public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { 
                        } 

                        @Override 
                        public void init(GLAutoDrawable drawable) { 
                                System.out.println("init: " + drawable); 
                        } 

                        @Override 
                        public void dispose(GLAutoDrawable drawable) { 
                                System.out.println("dispose: " + drawable); 
                        } 

                        @Override 
                        public void display(GLAutoDrawable drawable) { 
                        } 
                }); 
                glWindow.setTitle("Test"); 
                glWindow.setSize(1024, 768); 
                glWindow.setUndecorated(false); 
                glWindow.setPointerVisible(true); 
                glWindow.setVisible(true); 
                glWindow.setFullscreen(false); 
                glWindow.setDefaultCloseOperation(WindowClosingProtocol.WindowClosingMode.DISPOSE_ON_CLOSE); 

                Animator animator = new Animator(glWindow); 
                animator.start(); 
        }