Clicking "fix" throws an exception

[Heliosmaster]

What steps will reproduce the problem?

1. click "fix" button for a problem

What is the expected result?

What happens instead?

exception

Please provide any additional information below. Attach a screenshot if
possible.

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2012-03-07 02:32:17
Last Changed Author: stoecker
Revision: 5047
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2012-03-06 10:30:34 +0100 (Tue, 06 Mar 2012)
Last Changed Rev: 5047

Identification: JOSM/1.5 (5047 en)
Memory Usage: 161 MB / 910 MB (35 MB allocated, but free)
Java version: 1.6.0_23, Sun Microsystems Inc., OpenJDK Server VM
Operating system: Linux
Dataset consistency test: No problems found


org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Primitive must be part of the dataset: {Node id=-6596 version=0 MVD lat=44.265833516917944,lon=12.352309103424181}
	at org.openstreetmap.josm.data.osm.OsmPrimitive.checkDataset(OsmPrimitive.java:309)
	at org.openstreetmap.josm.data.osm.OsmPrimitive.getReferrers(OsmPrimitive.java:829)
	at org.openstreetmap.josm.data.osm.OsmPrimitive.getReferrers(OsmPrimitive.java:850)
	at org.openstreetmap.josm.data.osm.OsmPrimitive.getReferrer(OsmPrimitive.java:147)
	at org.openstreetmap.josm.command.DeleteCommand.delete(DeleteCommand.java:363)
	at org.openstreetmap.josm.command.DeleteCommand.delete(DeleteCommand.java:267)
	at org.openstreetmap.josm.data.validation.tests.UntaggedNode.fixError(UntaggedNode.java:112)
	at org.openstreetmap.josm.data.validation.TestError.getFix(TestError.java:244)
	at org.openstreetmap.josm.gui.dialogs.ValidatorDialog$FixTask.realRun(ValidatorDialog.java:566)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:82)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:145)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
	at java.lang.Thread.run(Thread.java:679

[skyper]

Please submit full error log.

Please describe what you did before the fix. Did you run validator just before the fix ? Maybe the node was already deleted.

Please attach a small example file to reproduce.