Error Message
I have Alice on Macs in our computer lab. Several of them have been getting this error message (not all copied here - too long) and then they freeze up. What is this?
Alice version: 2.2 03/01/2012 os.name: Mac OS X os.version: 10.5.8 os.arch: x86_64 java.vm.name: Java HotSpot(TM) 64-Bit Server VM java.vm.version: 20.1-b02-384 user.dir: /Alice 2.2/Alice.app/Contents/Required Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.IndexedTriangleArrayProxy.render(IndexedTriangleArrayProxy.java:41) at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.VisualProxy.render(VisualProxy.java:118) at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.ContainerProxy.render(ContainerProxy.java:67) at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.TransformableProxy.render(TransformableProxy.java:43) at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.ContainerProxy.render(ContainerProxy.java:67) at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.TransformableProxy.render(TransformableProxy.java:43) at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.ContainerProxy.render(ContainerProxy.java:67) at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.CameraProxy.performClearAndRenderOffscreen(CameraProxy.java:101) at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.RenderTarget.performClearAndRenderOffscreen(RenderTarget.java:50) at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.RenderContext.display(RenderContext.java:64) at com.sun.opengl.impl.GLDrawableHelper.display(GLDrawableHelper.java:78) at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:435) at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194) at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:412) at javax.media.opengl.GLCanvas.display(GLCanvas.java:244) at javax.media.opengl.GLCanvas.paint(GLCanvas.java:277) at javax.media.opengl.GLCanvas.update(GLCanvas.java:354) at sun.awt.RepaintArea.updateComponent(RepaintArea.java:267) at sun.awt.RepaintArea.paint(RepaintArea.java:233) at apple.awt.ComponentModel.handleEvent(ComponentModel.java:263) at java.awt.Component.dispatchEventImpl(Component.java:4811) at java.awt.Component.dispatchEvent(Component.java:4565) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:679) at java.awt.EventQueue.access$000(EventQueue.java:85) at java.awt.EventQueue$1.run(EventQueue.java:638) at java.awt.EventQueue$1.run(EventQueue.java:636) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98) at java.awt.EventQueue$2.run(EventQueue.java:652) at java.awt.EventQueue$2.run(EventQueue.java:650) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.awt.EventQueue.dispatchEvent(EventQueue.java:649) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.IndexedTriangleArrayProxy.render(IndexedTriangleArrayProxy.java:41) at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrenderer.VisualProxy.render(VisualProxy.java:118) at edu.cmu.cs.stage3.alice.scenegraph.renderer.joglrender |
64 bit problem
The libraries are for 32 bit OS and will not work on 64 bit OS without some extra settings. You will need to make your Alice run as a 32 bit app.
See link [url]http://www.simplehelp.net/2009/09/15/how-to-run-os-x-programs-in-32-bit-mode/[/url] |
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