Hi Chris,

    From the line number, it seems that you are using v1.2 alpha1.

This bug (ID 4280182) is fixed in v1.2 beta1. If you encounter

the same result in v1.2 beta1, please send us a test program.

Thanks for your bug report.

- Kelvin

--------------
Java 3D Team
Sun Microsystems


>X-Sender: cspcp@scarlet
>MIME-Version: 1.0
>Date: Wed, 9 Feb 2000 15:45:08 +0000
>From: Christian Petermann <[EMAIL PROTECTED]>
>Subject: [JAVA3D] cleanTree: NullPointerException
>To: [EMAIL PROTECTED]
>
>Hi,
>
>Can anyone tell me why I get the following exception:
>java.lang.NullPointerException
>        at javax.media.j3d.WakeupCriterion.cleanTree(WakeupCriterion.java:64)
>        at
>javax.media.j3d.BehaviorScheduler.doWork(BehaviorScheduler.java:131)
>        at javax.media.j3d.J3dThread.run(J3dThread.java:248)
>
>It occurs, when I duplicate a BranchGroup and attach it again to the locale.
>If I don't put it back in the origianl scenegraph it works fine...
>
>Thanks,
>
>Chris.
>
>PS:
>I'm using jdk1.3rc1 and j3d1.2beta1 on Windows NT4.0.
>
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