delete "cycle routes" layer caused NPE at SaveLayersDialog$SaveAndProceedAction

[ardisphere@…]

What steps will reproduce the problem?

1. highlight a layer in the Layers panel
2. click the "delete the selected layers"

What is the expected result?

Layer should delete

What happens instead?

"unexpected exception" window

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: 2016-09-06 00:16:07 +0200 (Tue, 06 Sep 2016)
Build-Date:2016-09-05 22:21:00
Revision:10966
Relative:URL: ^/trunk

Identification: JOSM/1.5 (10966 en) Linux Ubuntu 16.04.1 LTS
Memory Usage: 415 MB / 852 MB (166 MB allocated, but free)
Java version: 1.8.0_91-8u91-b14-3ubuntu1~16.04.1-b14, Oracle Corporation, OpenJDK 64-Bit Server VM
Screen: :0.0 1920x1080
Maximum Screen Size: 1920x1080
Java package: openjdk-8-jre:amd64-8u91-b14-3ubuntu1~16.04.1
VM arguments: [-Djosm.restart=true, -Djava.net.useSystemProxies=true]
Dataset consistency test: No problems found

Plugins:
+ CommandLine (32796)
+ FastDraw (32938)
+ ImportImagePlugin (32699)
+ ImproveWay (1452443304)
+ PicLayer (32796)
+ apache-commons (32699)
+ apache-http (32699)
+ areaselector (282)
+ auto_tools (1471534390)
+ buildings_tools (32944)
+ continuosDownload (53)
+ download_along (32946)
+ ejml (32680)
+ geotools (32813)
+ importvec (32699)
+ jogl (1.0.46)
+ jts (32699)
+ log4j (32699)
+ measurement (32936)
+ merge-overlap (32699)
+ namemanager (32699)
+ o5m (32857)
+ osm-obj-info (1468276210)
+ osmarender (32699)
+ pbf (32865)
+ pdfimport (32796)
+ plastic_laf (32699)
+ poly (32699)
+ print (32699)
+ pt_assistant (32990)
+ public_transport (32796)
+ public_transport_layer (32817)
+ reltoolbox (32796)
+ reverter (32796)
+ routes (32842)
+ routing (32796)
+ tageditor (32796)
+ terracer (32699)
+ undelete (32699)
+ utilsplugin2 (32815)
+ waydownloader (32699)

OSM API: http://opengeofiction.net/api


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (17) of main
java.lang.NullPointerException
	at org.openstreetmap.josm.gui.io.SaveLayersDialog$SaveAndProceedAction.<init>(SaveLayersDialog.java:383)
	at org.openstreetmap.josm.gui.io.SaveLayersDialog.<init>(SaveLayersDialog.java:71)
	at org.openstreetmap.josm.Main.saveUnsavedModifications(Main.java:934)
	at org.openstreetmap.josm.gui.dialogs.layer.DeleteLayerAction.actionPerformed(DeleteLayerAction.java:46)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
	at javax.swing.AbstractButton$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:6535)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
	at java.awt.Component.processEvent(Component.java:6300)
	at java.awt.Container.processEvent(Container.java:2236)
	at java.awt.Component.dispatchEventImpl(Component.java:4891)
	at java.awt.Container.dispatchEventImpl(Container.java:2294)
	at java.awt.Component.dispatchEvent(Component.java:4713)
	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:2750)
	at java.awt.Component.dispatchEvent(Component.java:4713)
	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:76)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
	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:76)
	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)

[ardisphere@…]

After some troubleshooting, I believe this exception was being caused by the plugin called "plastic_laf". I removed the plugin and the problem ended.

[Don-vip]

Closed as duplicate of #14016.