OverlappingFileLockException at JCSCacheManager.initialize

[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: 2019-12-01 23:10:15 +0100 (Sun, 01 Dec 2019)
Build-Date:2019-12-02 02:30:57
Revision:15553
Relative:URL: ^/trunk

Identification: JOSM/1.5 (15553 en) Windows 7 32-Bit
OS Build number: Windows 7 Ultimate (7601)
Memory Usage: 247 MB / 989 MB (134 MB allocated, but free)
Java version: 1.9.0-ea-b83, Oracle Corporation, Java HotSpot(TM) Client VM
Screen: \Display0 1366x768
Maximum Screen Size: 1366x768

Plugins:
+ imagery_offset_db (34908)
+ turnrestrictions (34977)

Last errors/warnings:
- E: Handled by bug report queue: java.nio.channels.OverlappingFileLockException


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (16) of main
java.nio.channels.OverlappingFileLockException
	at sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255)
	at sun.nio.ch.SharedFileLockTable.add(FileLockTable.java:152)
	at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:1107)
	at java.nio.channels.FileChannel.tryLock(FileChannel.java:1155)
	at org.openstreetmap.josm.data.cache.JCSCacheManager.initialize(JCSCacheManager.java:119)
	at org.openstreetmap.josm.data.cache.JCSCacheManager.getCache(JCSCacheManager.java:183)
	at org.openstreetmap.josm.gui.layer.AbstractCachedTileSourceLayer.getCache(AbstractCachedTileSourceLayer.java:120)
	at org.openstreetmap.josm.gui.layer.AbstractCachedTileSourceLayer.getTileLoaderFactory(AbstractCachedTileSourceLayer.java:108)
	at org.openstreetmap.josm.gui.bbox.JosmMapViewer.<init>(JosmMapViewer.java:150)
	at org.openstreetmap.josm.gui.bbox.SlippyMapBBoxChooser.<init>(SlippyMapBBoxChooser.java:83)
	at org.openstreetmap.josm.gui.download.SlippyMapChooser.<init>(SlippyMapChooser.java:35)
	at org.openstreetmap.josm.gui.download.DownloadDialog.buildMainPanel(DownloadDialog.java:128)
	at org.openstreetmap.josm.gui.download.DownloadDialog.<init>(DownloadDialog.java:230)
	at org.openstreetmap.josm.gui.download.DownloadDialog.<init>(DownloadDialog.java:218)
	at org.openstreetmap.josm.gui.download.DownloadDialog.getInstance(DownloadDialog.java:84)
	at org.openstreetmap.josm.actions.DownloadAction.actionPerformed(DownloadAction.java:35)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2026)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2366)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:404)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:261)
	at javax.swing.AbstractButton.doClick(AbstractButton.java:378)
	at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:957)
	at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1001)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:297)
	at java.awt.Component.processMouseEvent(Component.java:6607)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3361)
	at java.awt.Component.processEvent(Component.java:6372)
	at java.awt.Container.processEvent(Container.java:2259)
	at java.awt.Component.dispatchEventImpl(Component.java:4991)
	at java.awt.Container.dispatchEventImpl(Container.java:2317)
	at java.awt.Component.dispatchEvent(Component.java:4823)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4906)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4543)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4484)
	at java.awt.Container.dispatchEventImpl(Container.java:2303)
	at java.awt.Window.dispatchEventImpl(Window.java:2759)
	at java.awt.Component.dispatchEvent(Component.java:4823)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:761)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:712)
	at java.awt.EventQueue$3.run(EventQueue.java:706)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.awt.EventQueue$4.run(EventQueue.java:734)
	at java.awt.EventQueue$4.run(EventQueue.java:732)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:731)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:192)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:117)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:106)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:102)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:94)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:83)

[Don-vip]

You're using a very outdated development version of Java 9, so clearly asking for trouble. Please use a currently supported and stable version of Java (8, 11 or 13).