id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
17481	NPE at AbstractTileSourceLayer.getVisibleTileSet	anonymous	team	"==== What steps will reproduce the problem?
1. Open OpenStreetCam layer (opens automatically on my setup)
2. Open Bing imagery
3. Close OSC and then Bing imagery

==== What is the expected result?
Bing imagery goes away and JOSM returns to welcome screen

==== What happens instead?
Exception. Probably only sporadically.

==== 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: 2019-03-03 00:16:03 +0100 (Sun, 03 Mar 2019)
Build-Date:2019-03-02 23:16:53
Revision:14824
Relative:URL: ^/trunk

Identification: JOSM/1.5 (14824 en) Linux Ubuntu 18.10
Memory Usage: 892 MB / 1820 MB (122 MB allocated, but free)
Java version: 1.8.0_201-b09, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: :0.0 1680x1050
Maximum Screen Size: 1680x1050
VM arguments: [-Djava.security.policy=file:${JAVA_HOME}/jre/lib/security/javaws.policy, -DtrustProxy=true, -Djnlpx.home=${JAVA_HOME}/jre/bin, -Djava.security.manager, -Djnlpx.origFilenameArg=${HOME}/.java/deployment/cache/6.0/56/1ee8cfb8-2f914bf0, -Djnlpx.remove=false, -Dsun.awt.warmup=true, -Djava.util.Arrays.useLegacyMergeSort=true, -Djnlpx.heapsize=NULL,2048m, -Djnlpx.splashport=40317, -Djnlp.application.href=https://josm.openstreetmap.de/download/josm.jnlp, -Djnlpx.jvm=${JAVA_HOME}/jre/bin/java]

Plugins:
+ OpenStreetCam (184)
+ buildings_tools (34904)
+ utilsplugin2 (34867)

Map paint styles:
+ https://josm.openstreetmap.de/josmfile?page=Styles/TigerReviewedNo&zip=1

Last errors/warnings:
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- 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-2 (56) of javawsApplicationThreadGroup
java.lang.NullPointerException
	at org.openstreetmap.josm.gui.layer.AbstractTileSourceLayer.getVisibleTileSet(AbstractTileSourceLayer.java:903)
	at org.openstreetmap.josm.gui.layer.AbstractTileSourceLayer.loadAllErrorTiles(AbstractTileSourceLayer.java:930)
	at org.openstreetmap.josm.gui.layer.TMSLayer.lambda$getTileSource$0(TMSLayer.java:74)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	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:74)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
	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)
}}}
"	defect	closed	normal	19.03	Core imagery	latest	fixed	template_report