#111 NPE in link slide

[Anonymous]

I am using SVN 3875 (24/09/2010).
Spec: Linux, Sun Java 1.6.0_20-b02 64bit, 8 GByte RAM, Core2Quad 2,66 GHz (Q9450)

While playing around with the link slide feature, I triggered a NPE:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at net.claribole.zgrviewer.GraphicsManager.linkSlider(GraphicsManager.java:1476)
at net.claribole.zgrviewer.GraphicsManager$1.execute(GraphicsManager.java:1469)
at fr.inria.zvtm.animation.AnimationFactory$1.end(AnimationFactory.java:166)
at fr.inria.zvtm.animation.Animation$TimingInterceptor.end(Animation.java:182)
at org.jdesktop.animation.timing.Animator.end(Animator.java:755)
at org.jdesktop.animation.timing.Animator.stop(Animator.java:660)
at org.jdesktop.animation.timing.Animator.timingEvent(Animator.java:732)
at org.jdesktop.animation.timing.Animator.access$200(Animator.java:75)
at org.jdesktop.animation.timing.Animator$TimingSourceTarget.timingSourceEvent(Animator.java:996)
at org.jdesktop.animation.timing.TimingSource.timingEvent(TimingSource.java:133)
at fr.inria.zvtm.animation.TickSource.tick(AnimationManager.java:512)
at fr.inria.zvtm.animation.TickThread$1.actionPerformed(AnimationManager.java:526)
at javax.swing.Timer.fireActionPerformed(Timer.java:271)
at javax.swing.Timer$DoPostEvent.run(Timer.java:201)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

To reproduce this, also consider my related bug reports.