[JAVA3D] Exception when resizing

[Olivier fillon]

When resizing the frame with my canvas, I sometimes( yes not always!!!)  get the following exception: javax.vecmath.SingularMatrixException: cannot invert matrix         at javax.media.j3d.Transform3D.invertGeneral(Transform3D.java:2818)         at javax.media.j3d.Transform3D.invert(Transform3D.java:2636)         at javax.media.j3d.CanvasViewCache.computeFrustumPlanes(CanvasViewCache. java:1210)         at javax.media.j3d.CanvasViewCache.computeView(CanvasViewCache.java:952)           at javax.media.j3d.CanvasViewCache.computeDerivedData(CanvasViewCache.ja va:261)         at javax.media.j3d.Canvas3D.updateViewCache(Canvas3D.java:1048)         at javax.media.j3d.Renderer.run(Renderer.java:253)   As seen in the stack, i do not manage anything in the resize any idea on how to solve this??? cheers Olivier