Error after installing current version

[anonymous]

What steps will reproduce the problem?

What is the expected result?

What happens instead?

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: 2018-07-29 00:41:59 +0200 (Sun, 29 Jul 2018)
Build-Date:2018-07-29 01:32:17
Revision:14066
Relative:URL: ^/trunk

Identification: JOSM/1.5 (14066 de) Windows 10 64-Bit
OS Build number: Windows 10 Home 1803 (17134)
Memory Usage: 247 MB / 989 MB (108 MB allocated, but free)
Java version: 1.8.0_181-b13, Oracle Corporation, Java HotSpot(TM) Client VM
Screen: \Display0 1920x1200
Maximum Screen Size: 1920x1200

Plugins:
+ FixAddresses (34389)
+ HouseNumberTaggingTool (34389)
+ ImportImagePlugin (34445)
+ Mapillary (v1.5.15)
+ OpenStreetCam (160)
+ PicLayer (34389)
+ RoadSigns (34109)
+ SeaMapEditor (34097)
+ apache-commons (34389)
+ apache-http (34389)
+ buildings_tools (34212)
+ continuosDownload (1530471163)
+ contourmerge (1012)
+ ejml (34389)
+ geotools (34125)
+ gson (34389)
+ importvec (34206)
+ jts (34206)
+ log4j (34038)
+ mapdust (34389)
+ pdfimport (34436)
+ photoadjust (34389)
+ reltoolbox (34346)
+ reverter (34271)
+ turnlanes (34288)
+ turnrestrictions (34129)
+ utilsplugin2 (33704)
+ wikipedia (v1.1.0)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/PublicTransportOneClick&zip=1

Map paint styles:
+ https://josm.openstreetmap.de/josmfile?page=Styles/Maxspeed&style&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Styles/Maxspeed&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/MaxspeedIcons&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Power&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/PublicTransport&zip=1
- https://raw.githubusercontent.com/OpenSeaMap/josm/master/INT1_Seamark.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Noname&zip=1

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.
- E: Handled by bug report queue: org.openstreetmap.josm.plugins.PluginException: In der Erweiterung contourmerge ist ein Fehler aufgetreten.. Ursache: java.lang.NoClassDefFoundError: org/openstreetmap/josm/gui/MapView$LayerChangeListener. Ursache: java.lang.ClassNotFoundException: org.openstreetmap.josm.gui.MapView$LayerChangeListener


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (17) of main
org.openstreetmap.josm.plugins.PluginException: In der Erweiterung contourmerge ist ein Fehler aufgetreten.
	at org.openstreetmap.josm.plugins.PluginProxy.handlePluginException(PluginProxy.java:60)
	at org.openstreetmap.josm.plugins.PluginProxy.addDownloadSelection(PluginProxy.java:97)
	at org.openstreetmap.josm.plugins.PluginHandler.addDownloadSelection(PluginHandler.java:1224)
	at org.openstreetmap.josm.gui.download.DownloadDialog.buildMainPanel(DownloadDialog.java:136)
	at org.openstreetmap.josm.gui.download.DownloadDialog.<init>(DownloadDialog.java:231)
	at org.openstreetmap.josm.gui.download.DownloadDialog.<init>(DownloadDialog.java:219)
	at org.openstreetmap.josm.gui.download.DownloadDialog.getInstance(DownloadDialog.java:82)
	at org.openstreetmap.josm.actions.DownloadAction.actionPerformed(DownloadAction.java:35)
	at org.openstreetmap.josm.gui.download.DownloadDialog.autostartIfNeeded(DownloadDialog.java:435)
	at org.openstreetmap.josm.gui.MainApplication$GuiFinalizationWorker.run(MainApplication.java:1439)
	at java.awt.event.InvocationEvent.dispatch(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.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)
Caused by: java.lang.NoClassDefFoundError: org/openstreetmap/josm/gui/MapView$LayerChangeListener
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.access$100(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at org.openstreetmap.josm.plugins.PluginClassLoader.loadClass(PluginClassLoader.java:74)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
	at java.lang.Class.privateGetMethodRecursive(Unknown Source)
	at java.lang.Class.getMethod0(Unknown Source)
	at java.lang.Class.getMethod(Unknown Source)
	at org.openstreetmap.josm.plugins.PluginProxy.addDownloadSelection(PluginProxy.java:92)
	... 22 more
Caused by: java.lang.ClassNotFoundException: org.openstreetmap.josm.gui.MapView$LayerChangeListener
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at org.openstreetmap.josm.plugins.PluginClassLoader.loadClass(PluginClassLoader.java:74)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 40 more

[Don-vip]

Closed as duplicate of #16640.