crash on copy relation

[anonymous]

What steps will reproduce the problem?

1. mark relation 7630511
2. press copy-relation-button

What is the expected result?

dialog with copyed realtion

What happens instead?

this crash report

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

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2018-03-04 16:20:37 +0100 (Sun, 04 Mar 2018)
Build-Date:2018-03-04 15:24:13
Revision:13500
Redirecting:to URL 'https://josm.openstreetmap.de/svn/trunk':
Relative:URL: ^/trunk

Identification: JOSM/1.5 (13500 de) Linux Ubuntu 16.04.4 LTS
Memory Usage: 328 MB / 732 MB (189 MB allocated, but free)
Java version: 1.8.0_151-8u151-b12-0ubuntu0.16.04.2-b12, Oracle Corporation, OpenJDK Server VM
Screen: :0.0 1680x1050
Maximum Screen Size: 1680x1050
Java package: openjdk-8-jre:i386-8u151-b12-0ubuntu0.16.04.2
WebStart package: icedtea-netx:i386-1.6.2-3ubuntu1
VM arguments: [-Dicedtea-web.bin.name=javaws, -Dicedtea-web.bin.location=/usr/bin/javaws, -Djava.security.manager, -Djava.security.policy=/etc/icedtea-web/javaws.policy]
Dataset consistency test: No problems found

Last errors/warnings:
- E: Region [TMS_BLOCK_v2] Failure getting from disk, key = DigitalGlobe Standard Luftbilder:https://{switch:a,b,c,d}.tiles.mapbox.com/v4/digitalglobe.0a8e44ba/{zoom}/{x}/{y}.png?access_token=pk.eyJ1IjoiZGlnaXRhbGdsb2JlIiwiYSI6ImNqZGFrZ3pjczNpaHYycXFyMGo0djY3N2IifQ.90uebT4-ow1uqZKTUrf6RQ/19/273944/177713
- E: Region [TMS_BLOCK_v2] Failure getting from disk, key = DigitalGlobe Standard Luftbilder:https://{switch:a,b,c,d}.tiles.mapbox.com/v4/digitalglobe.0a8e44ba/{zoom}/{x}/{y}.png?access_token=pk.eyJ1IjoiZGlnaXRhbGdsb2JlIiwiYSI6ImNqZGFrZ3pjczNpaHYycXFyMGo0djY3N2IifQ.90uebT4-ow1uqZKTUrf6RQ/19/273940/177712
- E: Region [TMS_BLOCK_v2] Failure getting from disk, key = DigitalGlobe Standard Luftbilder:https://{switch:a,b,c,d}.tiles.mapbox.com/v4/digitalglobe.0a8e44ba/{zoom}/{x}/{y}.png?access_token=pk.eyJ1IjoiZGlnaXRhbGdsb2JlIiwiYSI6ImNqZGFrZ3pjczNpaHYycXFyMGo0djY3N2IifQ.90uebT4-ow1uqZKTUrf6RQ/19/273940/177714
- E: Region [TMS_BLOCK_v2] Failure getting from disk, key = DigitalGlobe Standard Luftbilder:https://{switch:a,b,c,d}.tiles.mapbox.com/v4/digitalglobe.0a8e44ba/{zoom}/{x}/{y}.png?access_token=pk.eyJ1IjoiZGlnaXRhbGdsb2JlIiwiYSI6ImNqZGFrZ3pjczNpaHYycXFyMGo0djY3N2IifQ.90uebT4-ow1uqZKTUrf6RQ/19/273941/177715
- E: Region [TMS_BLOCK_v2] Failure getting from disk, key = DigitalGlobe Standard Luftbilder:https://{switch:a,b,c,d}.tiles.mapbox.com/v4/digitalglobe.0a8e44ba/{zoom}/{x}/{y}.png?access_token=pk.eyJ1IjoiZGlnaXRhbGdsb2JlIiwiYSI6ImNqZGFrZ3pjczNpaHYycXFyMGo0djY3N2IifQ.90uebT4-ow1uqZKTUrf6RQ/19/273944/177712
- E: Region [TMS_BLOCK_v2] Failure getting from disk, key = DigitalGlobe Standard Luftbilder:https://{switch:a,b,c,d}.tiles.mapbox.com/v4/digitalglobe.0a8e44ba/{zoom}/{x}/{y}.png?access_token=pk.eyJ1IjoiZGlnaXRhbGdsb2JlIiwiYSI6ImNqZGFrZ3pjczNpaHYycXFyMGo0djY3N2IifQ.90uebT4-ow1uqZKTUrf6RQ/19/273944/177714
- E: Region [TMS_BLOCK_v2] Failure getting from disk, key = DigitalGlobe Standard Luftbilder:https://{switch:a,b,c,d}.tiles.mapbox.com/v4/digitalglobe.0a8e44ba/{zoom}/{x}/{y}.png?access_token=pk.eyJ1IjoiZGlnaXRhbGdsb2JlIiwiYSI6ImNqZGFrZ3pjczNpaHYycXFyMGo0djY3N2IifQ.90uebT4-ow1uqZKTUrf6RQ/19/273940/177715
- E: Handled by bug report queue: java.lang.NullPointerException
- E: Handled by bug report queue: java.lang.NullPointerException
- E: Handled by bug report queue: java.lang.NullPointerException


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-1 (36) of JOSM
java.lang.NullPointerException
	at org.openstreetmap.josm.gui.dialogs.relation.actions.AbstractRelationEditorAction.canDownload(AbstractRelationEditorAction.java:57)
	at org.openstreetmap.josm.gui.dialogs.relation.actions.DownloadIncompleteMembersAction.updateEnabledState(DownloadIncompleteMembersAction.java:60)
	at org.openstreetmap.josm.gui.dialogs.relation.actions.DownloadIncompleteMembersAction.<init>(DownloadIncompleteMembersAction.java:43)
	at org.openstreetmap.josm.gui.dialogs.relation.GenericRelationEditor$LeftButtonToolbar.<init>(GenericRelationEditor.java:667)
	at org.openstreetmap.josm.gui.dialogs.relation.GenericRelationEditor.<init>(GenericRelationEditor.java:223)
	at org.openstreetmap.josm.gui.dialogs.relation.RelationEditor.getEditor(RelationEditor.java:116)
	at org.openstreetmap.josm.actions.relation.DuplicateRelationAction.duplicateRelationAndLaunchEditor(DuplicateRelationAction.java:35)
	at org.openstreetmap.josm.actions.relation.DuplicateRelationAction.actionPerformed(DuplicateRelationAction.java:48)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
	at java.awt.Component.processMouseEvent(Component.java:6533)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
	at java.awt.Component.processEvent(Component.java:6298)
	at java.awt.Container.processEvent(Container.java:2236)
	at java.awt.Component.dispatchEventImpl(Component.java:4889)
	at java.awt.Container.dispatchEventImpl(Container.java:2294)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
	at java.awt.Container.dispatchEventImpl(Container.java:2280)
	at java.awt.Window.dispatchEventImpl(Window.java:2746)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
	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.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
	at java.awt.EventQueue$4.run(EventQueue.java:731)
	at java.awt.EventQueue$4.run(EventQueue.java:729)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
	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 #16060.