jdk 1.2.2 j3d 1.1.2 NT 4 platform

When adding a getSceneGroup() obtained from a vrml loader, I get the
following exception:

11/2/99 12:10 PM, error: javax.media.j3d.IllegalSharingException:
SharedGroup: I
llegal leaf nodes
javax.media.j3d.IllegalSharingException: SharedGroup: Illegal leaf nodes
        at
javax.media.j3d.SharedGroupRetained.setLive(SharedGroupRetained.java:
57)
        at javax.media.j3d.LinkRetained.setLive(LinkRetained.java:87)
        at javax.media.j3d.GroupRetained.setLive(GroupRetained.java:598)
        at javax.media.j3d.GroupRetained.setLive(GroupRetained.java:598)
        at javax.media.j3d.GroupRetained.setLive(GroupRetained.java:598)
        at
javax.media.j3d.TransformGroupRetained.setLive(TransformGroupRetained
.java:210)
        at javax.media.j3d.GroupRetained.setLive(GroupRetained.java:598)
        at
javax.media.j3d.TransformGroupRetained.setLive(TransformGroupRetained
.java:210)
        at javax.media.j3d.GroupRetained.setLive(GroupRetained.java:598)
        at
javax.media.j3d.GroupRetained.checkSetLive(GroupRetained.java:518)
        at javax.media.j3d.GroupRetained.doAddChild(GroupRetained.java:304)
        at javax.media.j3d.GroupRetained.addChild(GroupRetained.java:277)
        at javax.media.j3d.Group.addChild(Group.java:252)

Any idea?? What can be an illegal node, how can I find out: could not get
anything from:
list/doc
Cheers
--
Olivier Fillon    Minestar Project
olivier.fillon at mincom.com  Mincom Limited
Ph.+61-7-3303-3344               61 Wyandra Street
Fax+61-7-3303-3232               Teneriffe Qld. 4005.
Australia
Company home page: http://www.mincom.com/
Personal home page: http://www.powerup.com.au/~fillon
--

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