JOSM error validation bug

[D4RKL3G10N]

What steps will reproduce the problem?

1. Search for validation errors
2. If your find 'duplicate ways errors', select ALL items inside the folder, without selecting the folder (selecting only a few items won't cause the bug to appear)
3. Click on 'Fix'

What is the expected result?
Fixing the selected items

What happens instead?
The items aren't fixed, and a pop-up error message appears asking to report a bug.

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

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2010-12-31 02:31:28
Last Changed Author: bastiK
Revision: 3751
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2010-12-30 16:31:05 +0100 (Thu, 30 Dec 2010)
Last Changed Rev: 3751

Identification: JOSM/1.5 (3751 en)
Memory Usage: 336 MB / 494 MB (86 MB allocated, but free)
Java version: 1.6.0_23, Sun Microsystems Inc., Java HotSpot(TM) Client VM
Operating system: Windows 7
Dataset consistency test: No problems found

Plugin: openstreetbugs (23747)
Plugin: turnrestrictions (24937)

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
	at org.openstreetmap.josm.gui.dialogs.ValidatorDialog$FixTask.realRun(ValidatorDialog.java:582)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:83)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:129)
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.util.concurrent.FutureTask$Sync.innerRun%

[D4RKL3G10N]

Note the error message and the selected items on the 'validation errors' tab

[Cobra]

hmm... I can't reproduce this. How how many "Duplicated ways" and how many duplicates per error were there when this happened?

Could you provide an .osm file if you can reproduce this?