Got an error dialog the first time that I started to use JOSM

[anonymous]

What steps will reproduce the problem?

1. Download Java Installer
2. Install Java
3. Open en_josm-tested.jar

What is the expected result?

It would work? :-)

What happens instead?

Error message appears... I file this bug report...

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: 2020-12-28 22:03:23 +0100 (Mon, 28 Dec 2020)
Build-Date:2020-12-30 02:30:55
Revision:17428
Relative:URL: ^/trunk

Identification: JOSM/1.5 (17428 en) Mac OS X 10.16
OS Build number: macOS 11.1 (20C69)
Memory Usage: 349 MB / 3641 MB (170 MB allocated, but free)
Java version: 1.8.0_281-b09, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Look and Feel: com.apple.laf.AquaLookAndFeel
Screen: Display 441010748 2560×1440 (scaling 1.00×1.00) Display 69945484 2560×1440 (scaling 1.00×1.00)
Maximum Screen Size: 2560×1440
Best cursor sizes: 16×16→16×16, 32×32→32×32

Last errors/warnings:
- 00008.287 E: Failed to initialize tag2link rules
- 00008.288 E: java.io.IOException: Failed to open input stream for resource 'resource://META-INF/resources/webjars/tag2link/2020.10.18/index.json'
- 00333.691 E: Handled by bug report queue: java.lang.NoClassDefFoundError: Could not initialize class org.openstreetmap.josm.data.cache.JCSCacheManager



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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (18) of main
java.lang.NoClassDefFoundError: Could not initialize class org.openstreetmap.josm.data.cache.JCSCacheManager
	at org.openstreetmap.josm.gui.layer.AbstractCachedTileSourceLayer.getCache(AbstractCachedTileSourceLayer.java:119)
	at org.openstreetmap.josm.gui.layer.AbstractCachedTileSourceLayer.getTileLoaderFactory(AbstractCachedTileSourceLayer.java:106)
	at org.openstreetmap.josm.gui.bbox.JosmMapViewer.<init>(JosmMapViewer.java:148)
	at org.openstreetmap.josm.gui.bbox.SlippyMapBBoxChooser.<init>(SlippyMapBBoxChooser.java:100)
	at org.openstreetmap.josm.gui.download.SlippyMapChooser.<init>(SlippyMapChooser.java:35)
	at org.openstreetmap.josm.gui.download.DownloadDialog.buildMainPanel(DownloadDialog.java:150)
	at org.openstreetmap.josm.gui.download.DownloadDialog.<init>(DownloadDialog.java:265)
	at org.openstreetmap.josm.gui.download.DownloadDialog.<init>(DownloadDialog.java:253)
	at org.openstreetmap.josm.gui.download.DownloadDialog.getInstance(DownloadDialog.java:94)
	at org.openstreetmap.josm.actions.DownloadAction.actionPerformed(DownloadAction.java:35)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
	at java.awt.Component.processMouseEvent(Component.java:6539)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
	at java.awt.Component.processEvent(Component.java:6304)
	at java.awt.Container.processEvent(Container.java:2239)
	at java.awt.Component.dispatchEventImpl(Component.java:4889)
	at java.awt.Container.dispatchEventImpl(Container.java:2297)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4904)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4535)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4476)
	at java.awt.Container.dispatchEventImpl(Container.java:2283)
	at java.awt.Window.dispatchEventImpl(Window.java:2746)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760)
	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:74)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84)
	at java.awt.EventQueue$4.run(EventQueue.java:733)
	at java.awt.EventQueue$4.run(EventQueue.java:731)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:730)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
	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)

[howie@…]

Screen shot of error message

[skyper]

You should use a higher java version with macOS.

Please, try the bundle, see Download.

[taylor.smock]

Replying to skyper:

You should use a higher java version with macOS.

I was going to say that this felt like #19208 (due to JCSCacheManager). It doesn't look like it though. Maybe #19173 or #19335?

For the record, I'm on Mac with Java 8, and I haven't seen this issue.

[Don-vip]

How did you download JOSM and how do you launch it?

[skyper]

Similar: #21214