IllegalArgumentException: RouteLayer is not managed by us

[osm+bug@…]

What steps will reproduce the problem?

1. load aerial "ScanEx IRS" imagery
2. delete immediately this imagery by clicking on "Trash can" button in "Layers" window
3. got an exceptiopn

What is the expected result?

I wanted to remove the layer right after I added it.

What happens instead?

The layer is deleted, but the exception is occurred too.

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: 2017-01-02 00:53:29 +0100 (Mon, 02 Jan 2017)
Build-Date:2017-01-02 02:33:21
Revision:11427
Relative:URL: ^/trunk

Identification: JOSM/1.5 (11427 en) Linux Ubuntu 16.04.1 LTS
Memory Usage: 1288 MB / 5202 MB (893 MB allocated, but free)
Java version: 1.8.0_111-8u111-b14-2ubuntu0.16.04.2-b14, Oracle Corporation, OpenJDK 64-Bit Server VM
Screen: :0.0 1920x1080
Maximum Screen Size: 1920x1080
Java package: openjdk-8-jre:amd64-8u111-b14-2ubuntu0.16.04.2
VM arguments: [-Djosm.pref=<josm.pref>]

Plugins:
+ DirectDownload (33004)
+ DirectUpload (32885)
+ ElevationProfile (33004)
+ FastDraw (33004)
+ InfoMode (33004)
+ Mapillary (v1.3.2)
+ OpenStreetCam (32)
+ OpenStreetView (31)
+ PicLayer (33088)
+ RoadSigns (33088)
+ apache-commons (32994)
+ apache-http (32699)
+ auto_tools (1479831713)
+ download_along (32946)
+ editgpx (33004)
+ ejml (32680)
+ ext_tools (33004)
+ geochat (33088)
+ geojson (52)
+ geotools (33042)
+ gpsblam (33004)
+ gpxfilter (33004)
+ imagery_offset_db (33004)
+ imageryadjust (33004)
+ jna (32699)
+ jts (32699)
+ log4j (32699)
+ measurement (33088)
+ merge-overlap (33004)
+ openvisible (33088)
+ osmarender (33004)
+ photo_geotagging (33088)
+ photoadjust (33088)
+ print (33102)
+ pt_assistant (33108)
+ public_transport (33088)
+ reltoolbox (33088)
+ reverter (33088)
+ routes (33088)
+ routing (33004)
+ tageditor (33021)
+ turnlanes-tagging (254)
+ turnrestrictions (33088)
+ utilsplugin2 (33088)
+ waydownloader (33088)
+ waypoint_search (32699)
+ wikipedia (33098)

Last errors/warnings:
- W: Unable to get color from '' for color preference 'extrude.main.line'
- W: Unable to get color from '' for color preference 'improve.way.accuracy.helper.line'
- W: Unable to get color from '' for color preference 'make.parallel.helper.line'
- E: Handled by bug report queue: java.lang.IllegalArgumentException: RouteLayer [name=Czech hiking trails, associatedFile=null] is not managed by us.


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (18) of main
java.lang.IllegalArgumentException: RouteLayer [name=Czech hiking trails, associatedFile=null] is not managed by us.
	at org.openstreetmap.josm.gui.layer.LayerManager.checkContainsLayer(LayerManager.java:339)
	at org.openstreetmap.josm.gui.layer.LayerManager.realRemoveLayer(LayerManager.java:226)
	at org.openstreetmap.josm.gui.layer.LayerManager.lambda$removeLayer$1(LayerManager.java:214)
	at org.openstreetmap.josm.gui.util.GuiHelper.runInEDTAndWaitWithException(GuiHelper.java:138)
	at org.openstreetmap.josm.gui.layer.LayerManager.removeLayer(LayerManager.java:214)
	at org.openstreetmap.josm.plugins.routes.RoutesPlugin$2.run(RoutesPlugin.java:105)
	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:76)
	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)

[osm+bug@…]

screen shot

[michael2402]

The problem is there:
​https://github.com/openstreetmap/josm-plugins/blob/master/routes/src/org/openstreetmap/josm/plugins/routes/RoutesPlugin.java#L105

The user may have removed the layers, so that they cannot be removed there.

Checking if Main.getLayerManager() contains that layer fixes the problem.

[skyper]

Ticket #14276 has been marked as a duplicate of this ticket.

[Don-vip]

Closed as duplicate of #13300.