I import a lot of vrml-models in my app. To avoid multiple loading, I perform a cloneTree on the BranchGroup, i get from the vrml-loader, if i need one object at multiple places. Everything works fine with the vrml97-Loader, as long as no lights are defined in the vrml-file. If lights are defined, the following exception is thrown: java.lang.NullPointerException: at javax.media.j3d.Traverser.traverse(Traverser.java:1797) at javax.media.j3d.Traverser.traverse(Traverser.java:978) ...and so on What am i doing wrong? thanks for your help, Chris =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".