AssertionError: unexpected null value for n.getEastNorth - when adding a new node (drag virtual node)

[wiml@…]

This has happened a couple of times to me lately. It sounds pretty similar to #4845, but the exception is different, so I'm opening a separate bug.

What happens is that I click-and-drag on the + sign in the middle of a way to create a new node. The exception dialog comes up. After I dismiss the dialog, the way does contain the new node, but the new node doesn't always draw until I move or otehrwise alter the way.

The exceptions are isolated (i.e., after it happens once and I dismiss the exception dialog, JOSM works normally again).

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2010-04-12 01:31:59
Last Changed Author: bastiK
Revision: 3179
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2010-04-11 21:07:47 +0200 (Sun, 11 Apr 2010)
Last Changed Rev: 3179

Memory Usage: 1018 MB / 1018 MB (151 MB allocated, but free)
Java version: 1.6.0_17, Apple Inc., Java HotSpot(TM) 64-Bit Server VM
Operating system: Mac OS X

Dataset consistency test:
No problems found


Plugins: PicLayer,dataimport,graphview,lakewalker,measurement,remotecontrol,slippymap,validator,wmsplugin
Plugin wmsplugin (Version: 20566)
Plugin PicLayer (Version: 20217)
Plugin dataimport (Version: 20431)
Plugin remotecontrol (Version: 19946)
Plugin validator (Version: 20579)
Plugin slippymap (Version: 19887)
Plugin lakewalker (Version: 19624)
Plugin graphview (Version: 19441)
Plugin measurement (Version: 19681)

java.lang.AssertionError: unexpected null value for n.getEastNorth(). id of n is-12885
	at org.openstreetmap.josm.command.MoveCommand.executeCommand(MoveCommand.java:97)
	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:64)
	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:6396)
	at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3273)
	at java.awt.Component.processEvent(Component.java:6117)
	at java.awt.Container.processEvent(Container.java:2085)
	at java.awt.Component.dispatchEventImpl(Component.java:4714)
	at java.awt.Container.dispatchEventImpl(Container.java:2143)
	at java.awt.Component.dispatchEvent(Component.java:4544)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4618)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4299)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4212)
	at java.awt.Container.dispatchEventImpl(Container.java:2129)
	at java.awt.Window.dispatchEventImpl(Window.java:2475)
	at java.awt.Component.dispatchEvent(Component.java:4544)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:635)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

The backtrace is the same each time except for the node's id. Here are the only two lines that differ:

Memory Usage: 1018 MB / 1018 MB (202 MB allocated, but free)
...
java.lang.AssertionError: unexpected null value for n.getEastNorth(). id of n is-13003

[stoecker]

What projection do you use? Does it happen in any projection? Does it still happen with latest?

[Wim Lewis <wiml@…>]

I'm using Mercator ("Projection code EPSG:3857"), displaying coördinates in DMS.

This only happens occasionally, not every time I drag a new node or even every time I use JOSM, but I will update this bug with a version number next time it happens (I usually run latest).

[stoecker]

Ticket #5029 has been marked as a duplicate of this ticket.

[anonymous]

Closed as duplicate of #3892.