NPE when loading external preset "Step properties" with JOSM >= 5783

[Luebeck]

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2013-03-21 02:33:54
Last Changed Author: Don-vip
Revision: 5789
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2013-03-21 00:50:36 +0100 (Thu, 21 Mar 2013)
Last Changed Rev: 5789

Identification: JOSM/1.5 (5789 de)
Memory Usage: 34 MB / 989 MB (9 MB allocated, but free)
Java version: 1.6.0_30, Sun Microsystems Inc., Java HotSpot(TM) Client VM
Operating system: Windows 7

Plugin: AddrInterpolation
Plugin: HouseNumberTaggingTool
Plugin: OpeningHoursEditor
Plugin: RoadSigns
Plugin: buildings_tools
Plugin: measurement
Plugin: openstreetbugs
Plugin: reverter
Plugin: terracer
Plugin: utilsplugin2
Plugin: wikipedia

java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at org.openstreetmap.josm.Main.<init>(Main.java:383)
	at org.openstreetmap.josm.gui.MainApplication.<init>(MainApplication.java:69)
	at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:345)
Caused by: java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
	at java.util.concurrent.FutureTask.get(Unknown Source)
	at org.openstreetmap.josm.Main.<init>(Main.java:380)
	... 2 more
Caused by: java.lang.NullPointerException
	at java.util.TreeMap.put(Unknown Source)
	at java.util.TreeSet.add(Unknown Source)
	at java.util.AbstractCollection.addAll(Unknown Source)
	at java.util.TreeSet.addAll(Unknown Source)
	at org.openstreetmap.josm.tools.MultiMap.putAll(MultiMap.java:69)
	at org.openstreetmap.josm.gui.tagging.ac.AutoCompletionManager.cachePresets(AutoCompletionManager.java:156)
	at org.openstreetmap.josm.gui.preferences.map.TaggingPresetPreference.initialize(TaggingPresetPreference.java:282)
	at org.openstreetmap.josm.Main$2.call(Main.java:341)
	at org.openstreetmap.josm.Main$2.call(Main.java:334)
	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

[Don-vip]

In 5791/josm:

see #8530 - workaround for NPE when loading "Steps properties" presets ("No handrail" item) + various minor stuff

[Don-vip]

This is caused by r5783 changes, and does only happen when the "Steps properties" preset is loaded.
I don't know yet what is the best solution to this problem, but you have many possible workarounds in the meanwhile:

1. Disable this preset from your preferences.xml if you don't use it (all stuff related to "Step properties" and "​http://osmtools.de/josm/steps.xml")
2. Keep it but remove this section in %APPDATA%/JOSM/cache/mirror_http___osmtools.de_josm_steps.xml:

   <item name="No handrail" de.name="Kein Geländer">
           <key key="handrail:left"/>
           <key key="handrail:right"/>
           <key key="handrail:center"/>
           <key key="handrail" value="no"/>
   </item>
   

3. Switch back to JOSM 5779
4. Use tomorrow's latest (r5791+), but the item above won't be available

Sorry for this inconvenience.