Hi all, I'm facing one very strange bug. If I switch between the programs in the MSWindows (e.g. maximize and minimize windows) and select my program (which is written using Java3D-API), rather often I get such an exception: java.lang.NullPointerException at javax.media.j3d.RenderQueue.insertRoOrdered(RenderQueue.java:514) at javax.media.j3d.RenderQueue.insert(RenderQueue.java:365) at javax.media.j3d.Traverser.insertRenderObjects(Traverser.java:599) at javax.media.j3d.Traverser.run(Traverser.java:2135) It seems that Java3D or OpenGL is not able to redraw the screen in some time and I get an exception. I'm using MSWindows95. I find similar issue indicated by somebody in August, but there was no comments on it. Giedrius =========================================================================== 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".