Probablement une erreur de débutant. :-(

[jmfalisse@…]

What steps will reproduce the problem?

What is the expected result?

What happens instead?

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

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2017-05-29 16:19:58 +0200 (Mon, 29 May 2017)
Build-Date:2017-05-29 14:25:03
Revision:12275
Relative:URL: ^/trunk

Identification: JOSM/1.5 (12275 fr) Mac OS X 10.12.5
OS Build number: Mac OS X 10.12.5 (16F73)
Memory Usage: 711 MB / 1820 MB (205 MB allocated, but free)
Java version: 1.8.0_131-b11, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: Display 69677760 1280x800
Maximum Screen Size: 1280x800
VM arguments: [-Djava.security.policy=file:<java.home>/lib/security/javaws.policy, -DtrustProxy=true, -Djnlpx.home=<java.home>/bin, -Djava.security.manager, -Djnlpx.origFilenameArg=${HOME}/Library/Application Support/Oracle/Java/Deployment/cache/6.0/56/1ee8cfb8-17886e12, -Djnlpx.remove=false, -Dsun.awt.warmup=true, -Djava.util.Arrays.useLegacyMergeSort=true, -Dmacosx.jnlpx.dock.name=JOSM, -Dmacosx.jnlpx.dock.icon=${HOME}/Library/Application Support/Oracle/Java/Deployment/cache/6.0/16/47ee53d0-4cf54b6f.icns, -Djnlp.application.href=https://josm.openstreetmap.de/download/josm.jnlp , -Djnlpx.jvm="<java.home>/bin/java"]
Dataset consistency test: No problems found

Plugins:
+ DirectDownload (33160)
+ ImproveOsm (110)
+ Mapillary (v1.5.3)
+ apache-commons (32994)
+ apache-http (32699)
+ fieldpapers (v0.4.1)
+ gson (32680)
+ mapdust (33232)
+ osm-obj-info (1484152384)
+ walkingpapers (32796)

Last errors/warnings:
- E: Handled by bug report queue: org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Primitive must be part of the dataset: {Way id=-31077 version=0 MV nodes=[{Node id=-31075 version=0 MV lat=-13.837460092868952,lon=34.292970294356344}, {Node id=-31076 version=0 MV lat=-13.83712673374838,lon=34.29069578111172}]}
- E: Handled by bug report queue: org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Primitive must be part of the dataset: {Way id=-31077 version=0 MV nodes=[{Node id=-31075 version=0 MV lat=-13.837460092868952,lon=34.292970294356344}, {Node id=-31076 version=0 MV lat=-13.83712673374838,lon=34.29069578111172}]}
- E: Handled by bug report queue: org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Primitive must be part of the dataset: {Way id=-31077 version=0 MV nodes=[{Node id=-31075 version=0 MV lat=-13.837460092868952,lon=34.292970294356344}, {Node id=-31076 version=0 MV lat=-13.83712673374838,lon=34.29069578111172}]}
- E: Handled by bug report queue: org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Primitive must be part of the dataset: {Way id=-31077 version=0 MV nodes=[{Node id=-31075 version=0 MV lat=-13.837460092868952,lon=34.292970294356344}, {Node id=-31076 version=0 MV lat=-13.83712673374838,lon=34.29069578111172}]}


=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-2 (46) of javawsApplicationThreadGroup
org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Primitive must be part of the dataset: {Way id=-31077 version=0 MV nodes=[{Node id=-31075 version=0 MV lat=-13.837460092868952,lon=34.292970294356344}, {Node id=-31076 version=0 MV lat=-13.83712673374838,lon=34.29069578111172}]}
	at org.openstreetmap.josm.data.osm.OsmPrimitive.checkDataset(OsmPrimitive.java:252)
	at org.openstreetmap.josm.data.osm.OsmPrimitive.getReferrers(OsmPrimitive.java:996)
	at org.openstreetmap.josm.data.osm.OsmPrimitive.getReferrers(OsmPrimitive.java:1021)
	at org.openstreetmap.josm.actions.CreateMultipolygonAction.getSelectedMultipolygonRelation(CreateMultipolygonAction.java:184)
	at org.openstreetmap.josm.actions.CreateMultipolygonAction.getSelectedMultipolygonRelation(CreateMultipolygonAction.java:175)
	at org.openstreetmap.josm.actions.CreateMultipolygonAction.updateEnabledState(CreateMultipolygonAction.java:273)
	at org.openstreetmap.josm.actions.JosmAction$SelectionChangeAdapter.selectionChanged(JosmAction.java:386)
	at org.openstreetmap.josm.data.osm.event.SelectionEventManager$OldListenerInfo.fire(SelectionEventManager.java:57)
	at org.openstreetmap.josm.data.osm.event.SelectionEventManager.fireEvent(SelectionEventManager.java:203)
	at org.openstreetmap.josm.data.osm.event.SelectionEventManager.lambda$selectionChanged$0(SelectionEventManager.java:198)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

[Don-vip]

Closed as duplicate of #14854.
Il y a un bug avec la touche backspace dans la version courante (corrigé dans la version de dev)