exception when adding a new node

[richlv]

clicked on virtual node to add a new node :

Repository Root: ​http://josm.openstreetmap.de/svn
Build-Date: 2010-03-08 02:32:04
Last Changed Author: Gubaer
Revision: 3094
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: ​http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2010-03-07 18:48:56 +0100 (Sun, 07 Mar 2010)
Last Changed Rev: 3094

Memory Usage: 494 MB / 494 MB (268 MB allocated, but free)
Java version: 1.6.0_18, Sun Microsystems Inc., Java HotSpot(TM) Client VM
Operating system: Linux

Dataset consistency test:
No problems found

Plugins: livegps,remotecontrol,wmsplugin
Plugin wmsplugin Version: 19992
Plugin remotecontrol Version: 19946
Plugin livegps Version: 20264

org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Unable to add primitive {Node id=-49746 version=0 V lat=57.023698564784965,lon=22.771014145407168} to the dataset because it is already included

at org.openstreetmap.josm.data.osm.DataSet.addPrimitive(DataSet.java:217)
at org.openstreetmap.josm.command.AddCommand.executeCommand(AddCommand.java:51)
at org.openstreetmap.josm.command.SequenceCommand.executeCommand(SequenceCommand.java:51)
at org.openstreetmap.josm.data.UndoRedoHandler.addNoRedraw(UndoRedoHandler.java:38)
at org.openstreetmap.josm.data.UndoRedoHandler.add(UndoRedoHandler.java:58)
at org.openstreetmap.josm.actions.mapmode.SelectAction.mouseDragged(SelectAction.java:216)
at java.awt.AWTEventMulticaster.mouseDragged(AWTEventMulticaster.java:303)
at java.awt.Component.processMouseMotionEvent(Component.java:6311)
at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3285)
at java.awt.Component.processEvent(Component.java:6032)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4630)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4255)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
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)

[bastiK]

Closed as duplicate of #3892.