When trying to add a new model (add objects -> click model -> add instance to world), I get a message box telling me that An unknown error has occured. The entity gets added to the object tree (see screenshot), but does not appear in the render window.
I'm using Alice for the first time on this computer. It worked fine on other computers in earlier versions on different PCs. I have searched the Alice forums for this particular issue, but no avail. The problem does not occur in Alice 2.3.3.
Alice version: 2.4.1
os.name: Windows XP
os.version: 5.1
os.arch: x86
java.vm.name: Java HotSpot(TM) Client VM
java.vm.version: 20.0-b11
user.dir: C:\Programme\Alice 2.4\Required
Error during simulation.
javax.media.j3d.CapabilityNotSetException: Appearance: no capability to set transparencyAttributes
at javax.media.j3d.Appearance.setTransparencyAttributes(Appearance.java:374)
at edu.cmu.cs.stage3.alice.scenegraph.renderer.java3drenderer.AppearanceProxy.changed(AppearanceProxy.java:122)
at edu.cmu.cs.stage3.alice.scenegraph.renderer.AbstractProxyRenderer.dispatchPropertyChange(AbstractProxyRenderer.java:38)
at edu.cmu.cs.stage3.alice.scenegraph.renderer.AbstractRenderer.changed(AbstractRenderer.java:220)
at edu.cmu.cs.stage3.alice.scenegraph.Element.onPropertyChange(Element.java:155)
at edu.cmu.cs.stage3.alice.scenegraph.Element.onPropertyChange(Element.java:162)
at edu.cmu.cs.stage3.alice.scenegraph.Appearance.setOpacity(Appearance.java:115)
at edu.cmu.cs.stage3.alice.core.Model.propertyChanged(Model.java:201)
at edu.cmu.cs.stage3.alice.core.Element.propertyChanged(Element.java:269)
at edu.cmu.cs.stage3.alice.core.Property.onChanged(Property.java:427)
at edu.cmu.cs.stage3.alice.core.Property.onSet(Property.java:453)
at edu.cmu.cs.stage3.alice.core.Property.set(Property.java:470)
at edu.cmu.cs.stage3.alice.core.Property.setHowMuch(Property.java:476)
at edu.cmu.cs.stage3.alice.core.Property.set(Property.java:492)
at edu.cmu.cs.stage3.alice.core.response.PropertyAnimation$RuntimePropertyAnimation.set(PropertyAnimation.java:90)
at edu.cmu.cs.stage3.alice.core.response.PropertyAnimation$RuntimePropertyAnimation.update(PropertyAnimation.java:135)
at edu.cmu.cs.stage3.alice.core.response.DoTogether$RuntimeDoTogether.update(DoTogether.java:71)
at edu.cmu.cs.stage3.alice.core.response.DoInOrder$RuntimeDoInOrder.childUpdate(DoInOrder.java:58)
at edu.cmu.cs.stage3.alice.core.response.DoInOrder$RuntimeDoInOrder.update(DoInOrder.java:101)
at edu.cmu.cs.stage3.alice.core.response.DoTogether$RuntimeDoTogether.update(DoTogether.java:71)
at edu.cmu.cs.stage3.alice.core.response.DoInOrder$RuntimeDoInOrder.childUpdate(DoInOrder.java:58)
at edu.cmu.cs.stage3.alice.core.response.DoInOrder$RuntimeDoInOrder.update(DoInOrder.java:101)
at edu.cmu.cs.stage3.alice.core.util.OneShot.scheduled(OneShot.java:56)
at edu.cmu.cs.stage3.alice.core.Scheduler.schedule(Scheduler.java:72)
at edu.cmu.cs.stage3.alice.core.Scheduler.run(Scheduler.java:98)
at edu.cmu.cs.stage3.alice.authoringtool.util.DefaultScheduler.simulateOnce(DefaultScheduler.java:117)
at edu.cmu.cs.stage3.alice.authoringtool.util.DefaultScheduler.run(DefaultScheduler.java:78)
at edu.cmu.cs.stage3.scheduler.AbstractScheduler.run(AbstractScheduler.java:45)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:641)
at java.awt.EventQueue.access$000(EventQueue.java:84)
at java.awt.EventQueue$1.run(EventQueue.java:602)
at java.awt.EventQueue$1.run(EventQueue.java:600)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:611)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
