IllegalStateException at mapillary panel buttons after layer was removed

[Klumbumbus]

What steps will reproduce the problem?

1. see attached gif

What is the expected result?

What happens instead?

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

same for the other buttons

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2018-02-27 19:44:48 +0100 (Tue, 27 Feb 2018)
Build-Date:2018-02-27 18:47:44
Revision:13473
Redirecting:to URL 'https://josm.openstreetmap.de/svn/trunk':
Relative:URL: ^/trunk

Identification: JOSM/1.5 (13473 de) Windows 10 64-Bit
OS Build number: Windows 10 Pro 1709 (16299)
Memory Usage: 1482 MB / 3641 MB (1152 MB allocated, but free)
Java version: 1.8.0_161-b12, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1680x1050
Maximum Screen Size: 1680x1050
VM arguments: [-Djava.security.manager, -Djava.security.policy=file:<java.home>\lib\security\javaws.policy, -DtrustProxy=true, -Djnlpx.home=<java.home>\bin, -Djnlpx.origFilenameArg=C:\Program Files (x86)\josm-latest-mehr-RAM.jnlp, -Djnlpx.remove=true, -Djava.util.Arrays.useLegacyMergeSort=true, -Djnlpx.heapsize=1024m,4096m, -Djnlpx.splashport=56088, -Djnlpx.jvm=<java.home>\bin\javaw.exe]

Plugins:
+ DirectUpload (33882)
+ HouseNumberTaggingTool (34074)
+ Mapillary (v1.5.10)
+ OpeningHoursEditor (33876)
+ apache-commons (33668)
+ apache-http (32699)
+ buildings_tools (34040)
+ editgpx (33782)
+ ejml (32680)
+ geotools (33958)
+ imagery-xml-bounds (34077)
+ imagery_offset_db (33774)
+ jogl (1.1.0)
+ jts (32699)
+ log4j (32699)
+ measurement (33760)
+ reltoolbox (33708)
+ reverter (34036)
+ tag2link (33934)
+ tageditor (33806)
+ tagging-preset-tester (33898)
+ terracer (33839)
+ turnlanes-tagging (260)
+ turnrestrictions (33780)
+ undelete (33980)
+ utilsplugin2 (33991)
+ wikipedia (34079)

2018-02-27 21:55:24.496 SCHWERWIEGEND: Handled by bug report queue: java.lang.IllegalStateException
java.lang.IllegalStateException
	at org.openstreetmap.josm.plugins.mapillary.MapillaryData.selectPrevious(MapillaryData.java:311)
	at org.openstreetmap.josm.plugins.mapillary.MapillaryData.selectPrevious(MapillaryData.java:296)
	at org.openstreetmap.josm.plugins.mapillary.gui.MapillaryMainDialog$PreviousPictureAction.actionPerformed(MapillaryMainDialog.java:384)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$500(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)

[taylor.smock]

Closing as invalid since none of the offending code exists anymore.