ISE: The layer has already been destroyed

[watmildon]

What steps will reproduce the problem?

I haven't tried to repro but wanted to capture the things I was doing.

1. Have a data layer with buildings in and such in it
2. Have a MWAI layer with address info in it
3. Use the conflation plugin to merge data in the data layer
4. After uploading, delete the data layer

What is the expected result?

Nothing

What happens instead?

Exception

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

Revision:18646
Build-Date:2023-01-30 15:15:00

Identification: JOSM/1.5 (18646 en) Windows 10 64-Bit
OS Build number: Windows 10 Pro 2009 (19045)
Memory Usage: 2528 MB / 4088 MB (752 MB allocated, but free)
Java version: 17.0.6+10-LTS, Azul Systems, Inc., OpenJDK 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1440×2560 (scaling 1.00×1.00) \Display1 3840×2160 (scaling 1.50×1.50)
Maximum Screen Size: 3840×2560
Best cursor sizes: 16×16→48×48, 32×32→48×48
System property file.encoding: Cp1252
System property sun.jnu.encoding: Cp1252
Locale info: en_US
Numbers with default locale: 1234567890 -> 1234567890
VM arguments: [-Djpackage.app-version=1.5.18646, --add-modules=java.scripting,java.sql,javafx.controls,javafx.media,javafx.swing,javafx.web, --add-exports=java.base/sun.security.action=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.plugins.jpeg=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.spi=ALL-UNNAMED, --add-opens=java.base/java.lang=ALL-UNNAMED, --add-opens=java.base/java.nio=ALL-UNNAMED, --add-opens=java.base/jdk.internal.loader=ALL-UNNAMED, --add-opens=java.base/jdk.internal.ref=ALL-UNNAMED, --add-opens=java.desktop/javax.imageio.spi=ALL-UNNAMED, --add-opens=java.desktop/javax.swing.text.html=ALL-UNNAMED, --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED, -Djpackage.app-path=%UserProfile%\AppData\Local\JOSM\JOSM.exe]
Dataset consistency test: No problems found

Plugins:
+ FastDraw (35978)
+ FixAddresses (36011)
+ MapRoulette (1676030679)
+ apache-commons (36034)
+ apache-http (35924)
+ buildings_tools (36011)
+ conflation (0.6.9)
+ continuosDownload (105)
+ contourmerge (v0.1.9)
+ ejml (35924)
+ geotools (36028)
+ gridify (1606242219)
+ imagery_offset_db (35978)
+ jackson (36034)
+ jaxb (35952)
+ jna (36005)
+ jts (36004)
+ mapwithai (1.10.4)
+ opendata (36025)
+ reverter (36043)
+ tageditor (36011)
+ terracer (35978)
+ todo (30306)
+ turnrestrictions (36011)
+ utilsplugin2 (36011)
+ wikipedia (605)

Map paint styles:
+ %UserProfile%\Address Tags Validator - Highlight unaddressed
+ https://josm.openstreetmap.de/josmfile?page=Styles/TigerReviewedNo&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Modified&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/AddressValidator&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Styles/MapWithAI&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Streets&zip=1

Last errors/warnings:
- 65170.014 E: java.lang.IllegalStateException: JOSM expected to find primitive [way 840710705] in dataset but it is not there. Please report this at https://josm.openstreetmap.de. This is not a critical error, it should be safe to continue in your work.
- 65170.022 E: java.lang.IllegalStateException: JOSM expected to find primitive [way 840710590] in dataset but it is not there. Please report this at https://josm.openstreetmap.de. This is not a critical error, it should be safe to continue in your work.
- 65170.029 E: java.lang.IllegalStateException: JOSM expected to find primitive [way 840706940] in dataset but it is not there. Please report this at https://josm.openstreetmap.de. This is not a critical error, it should be safe to continue in your work.
- 65170.037 E: java.lang.IllegalStateException: JOSM expected to find primitive [way 840708851] in dataset but it is not there. Please report this at https://josm.openstreetmap.de. This is not a critical error, it should be safe to continue in your work.
- 65170.045 E: java.lang.IllegalStateException: JOSM expected to find primitive [way 840706587] in dataset but it is not there. Please report this at https://josm.openstreetmap.de. This is not a critical error, it should be safe to continue in your work.
- 65170.052 E: java.lang.IllegalStateException: JOSM expected to find primitive [way 840709180] in dataset but it is not there. Please report this at https://josm.openstreetmap.de. This is not a critical error, it should be safe to continue in your work.
- 65170.061 E: java.lang.IllegalStateException: JOSM expected to find primitive [way 841979410] in dataset but it is not there. Please report this at https://josm.openstreetmap.de. This is not a critical error, it should be safe to continue in your work.
- 65170.068 E: java.lang.IllegalStateException: JOSM expected to find primitive [way 840710582] in dataset but it is not there. Please report this at https://josm.openstreetmap.de. This is not a critical error, it should be safe to continue in your work.
- 65170.077 E: java.lang.IllegalStateException: JOSM expected to find primitive [way 842216911] in dataset but it is not there. Please report this at https://josm.openstreetmap.de. This is not a critical error, it should be safe to continue in your work.
- 65480.269 E: Handled by bug report queue: java.lang.IllegalStateException: The layer has already been destroyed: ConflationLayer [name=Conflation, associatedFile=null]



=== REPORTED CRASH DATA ===
LayerManager#fireLayerRemoving:
 - listener: org.openstreetmap.josm.gui.MapView[,0,0,1155x1214,alignmentX=0.0,alignmentY=0.0,border=,flags=0,maximumSize=,minimumSize=java.awt.Dimension[width=10,height=0],preferredSize=]
 - event: LayerRemoveEvent [removedLayer=ConflationLayer [name=Conflation, associatedFile=null], lastLayer=false]
 - layer: ConflationLayer [name=Conflation, associatedFile=null]

BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (23) of main
java.lang.IllegalStateException: The layer has already been destroyed: ConflationLayer [name=Conflation, associatedFile=null]
	at org.openstreetmap.josm.gui.layer.Layer.destroy(Layer.java:288)
	at org.openstreetmap.josm.gui.MapView.layerRemoving(MapView.java:403)
	at org.openstreetmap.josm.gui.layer.LayerManager.fireLayerRemoving(LayerManager.java:476)
	at org.openstreetmap.josm.gui.layer.LayerManager.realRemoveSingleLayer(LayerManager.java:278)
	at org.openstreetmap.josm.gui.layer.MainLayerManager.realRemoveSingleLayer(MainLayerManager.java:330)
	at org.openstreetmap.josm.gui.layer.LayerManager.realRemoveLayer(LayerManager.java:266)
	at org.openstreetmap.josm.gui.layer.LayerManager.lambda$removeLayer$1(LayerManager.java:248)
	at org.openstreetmap.josm.gui.util.GuiHelper.runInEDTAndWaitWithException(GuiHelper.java:247)
	at org.openstreetmap.josm.gui.layer.LayerManager.removeLayer(LayerManager.java:248)
	at org.openstreetmap.josm.plugins.conflation.ConflationToggleDialog.clear(ConflationToggleDialog.java:392)
	at org.openstreetmap.josm.plugins.conflation.ConflationToggleDialog.layerRemoving(ConflationToggleDialog.java:1126)
	at org.openstreetmap.josm.gui.layer.LayerManager.fireLayerRemoving(LayerManager.java:476)
	at org.openstreetmap.josm.gui.layer.LayerManager.realRemoveSingleLayer(LayerManager.java:278)
	at org.openstreetmap.josm.gui.layer.MainLayerManager.realRemoveSingleLayer(MainLayerManager.java:330)
	at org.openstreetmap.josm.gui.layer.LayerManager.realRemoveLayer(LayerManager.java:266)
	at org.openstreetmap.josm.gui.layer.LayerManager.lambda$removeLayer$1(LayerManager.java:248)
	at org.openstreetmap.josm.gui.util.GuiHelper.runInEDTAndWaitWithException(GuiHelper.java:247)
	at org.openstreetmap.josm.gui.layer.LayerManager.removeLayer(LayerManager.java:248)
	at org.openstreetmap.josm.gui.dialogs.layer.DeleteLayerAction.actionPerformed(DeleteLayerAction.java:52)
	at java.desktop/javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at java.desktop/javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.desktop/java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
	at java.desktop/java.awt.Component.processMouseEvent(Unknown Source)
	at java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.desktop/java.awt.Component.processEvent(Unknown Source)
	at java.desktop/java.awt.Container.processEvent(Unknown Source)
	at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.desktop/java.awt.EventQueue$5.run(Unknown Source)
	at java.desktop/java.awt.EventQueue$5.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)

[skyper]

Closed as duplicate of #16960.