An error occured while the plugin was running :
java.lang.NullPointerException
at icy.canvas.Canvas3D.refresh(Canvas3D.java:979)
at icy.canvas.Canvas3D.sequencePainterChanged(Canvas3D.java:1144)
at icy.canvas.IcyCanvas.sequenceChanged(IcyCanvas.java:1309)
at icy.sequence.Sequence.fireChangeEvent(Sequence.java:4121)
at icy.sequence.Sequence.onChanged(Sequence.java:4348)
at icy.common.UpdateEventHandler.dispatchOnChanged(UpdateEventHandler.java:169)
at icy.common.UpdateEventHandler.changed(UpdateEventHandler.java:149)
at icy.sequence.Sequence.painterChanged(Sequence.java:4197)
at icy.sequence.Sequence.addPainter(Sequence.java:750)
at plugins.fab.ROITagger.TagPainterManager.(TagPainterManager.java:26)
at plugins.fab.spotDetector.SpotDetector.compute(SpotDetector.java:257)
at icy.plugin.PluginLauncher$LaunchingThread.run(PluginLauncher.java:56)
at icy.plugin.PluginLauncher$1.run(PluginLauncher.java:100)
at icy.system.thread.ThreadUtil.invokeNow(ThreadUtil.java:86)
at icy.plugin.PluginLauncher.launch(PluginLauncher.java:94)
at icy.gui.menu.MainRibbon$2.actionPerformed(MainRibbon.java:171)
at org.pushingpixels.flamingo.api.common.AbstractCommandButton.fireActionPerformed(AbstractCommandButton.java:614)
at org.pushingpixels.flamingo.api.common.AbstractCommandButton$ActionHandler.actionPerformed(AbstractCommandButton.java:566)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at org.pushingpixels.flamingo.api.common.model.ActionRepeatableButtonModel.setPressed(ActionRepeatableButtonModel.java:123)
at org.pushingpixels.flamingo.internal.ui.common.BasicCommandButtonListener.mouseReleased(BasicCommandButtonListener.java:147)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source