File, Update Data: NullPointerException at .josm.data.osm.QuadBuckets.unsupported

[phobie]

JOSM rejected to upload a bigger changeset due to conflicts.
I clicked on File --> Update Date and got this exception:

Path: trunk
URL: http://josm.openstreetmap.de/svn/trunk
Repository Root: http://josm.openstreetmap.de/svn
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Revision: 2184
Node Kind: directory
Last Changed Author: stoecker
Last Changed Rev: 2184
Last Changed Date: 2009-09-22 18:18:16 +0200 (Tue, 22 Sep 2009)

Memory Usage: 180 MB / 986 MB (42 MB allocated, but free)
Java version: 1.6.0_0

Plugins: measurementplastic_lafremotecontrolslippymaptageditortagging-preset-testerusertoolsutilspluginwaydownloaderwmsplugin
Plugin plastic_laf Version: 14016
Plugin measurement Version: 17377
Plugin remotecontrol Version: 17590
Plugin slippymap Version: 17433
Plugin tageditor Version: 17638
Plugin tagging-preset-tester Version: 14015
Plugin usertools Version: 17359
Plugin utilsplugin Version: 17550
Plugin waydownloader Version: 17654
Plugin wmsplugin Version: 17561

java.lang.NullPointerException

at org.openstreetmap.josm.data.osm.QuadBuckets.unsupported(QuadBuckets.java:671)
at org.openstreetmap.josm.data.osm.QuadBuckets.check_type(QuadBuckets.java:698)
at org.openstreetmap.josm.data.osm.QuadBuckets.contains(QuadBuckets.java:714)
at java.util.AbstractSet.removeAll(AbstractSet.java:174)
at org.openstreetmap.josm.actions.downloadtasks.DownloadOsmTaskList.run(DownloadOsmTaskList.java:135)
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:636)

[Harry Wood]

yes I saw the same

[mjulius]

This bug only seems to show when JOSM finds that nodes are missing in the downloaded dataset and is supposed to ask the user to check for deleted objects. The exception pops up before that.

[stoecker]

Closed as duplicate of #3587.