IncompatibleClassChangeError when starting JOSM rev:3902

[jBeata]

The following error occurs when starting JOSM rev.3902:

Build-Date: 2011-02-15 09:57:27
Revision: 3902
Is-Local-Build: true

Identification: JOSM/1.5 (3902 SVN en)
Memory Usage: 15 MB / 247 MB (12 MB allocated, but free)
Java version: 1.6.0_23, Sun Microsystems Inc., Java HotSpot(TM) Client VM
Operating system: Windows 7

java.lang.IncompatibleClassChangeError: Expecting non-static method org.openstreetmap.josm.actions.DownloadReferrersAction.getCurrentDataSet()Lorg/openstreetmap/josm/data/osm/DataSet;

at org.openstreetmap.josm.actions.DownloadReferrersAction.updateEnabledState(DownloadReferrersAction.java:93)
at org.openstreetmap.josm.actions.JosmAction.initEnabledState(JosmAction.java:160)
at org.openstreetmap.josm.actions.JosmAction.installAdapters(JosmAction.java:149)
at org.openstreetmap.josm.actions.JosmAction.<init>(JosmAction.java:93)
at org.openstreetmap.josm.actions.JosmAction.<init>(JosmAction.java:68)
at org.openstreetmap.josm.actions.DownloadReferrersAction.<init>(DownloadReferrersAction.java:29)
at org.openstreetmap.josm.gui.MainMenu.<init>(MainMenu.java:113)
at org.openstreetmap.josm.Main.<init>(Main.java:215)
at org.openstreetmap.josm.gui.MainApplication.<init>(MainApplication.java:58)
at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:225)

[stoecker]

Closed as duplicate of #5904.

[jBeata]

Replying to stoecker:

Closed as duplicate of #5904.

This problem still persist, also with the latest update from the JOSM svn, and a clean build.

[stoecker]

The issue is caused by the change of getCurrentDataSet() in JosmAction, which now got static. Java dependency checking is broken and does not catch such issues properly - thus the ant clean. If you have the problem after ant clean, then somehow the clean does not work reliable or you start the wrong jar. Try following steps:

• ant clean
• svn status --no-ignore --> see what generated files are left --> delete them
• start josm --> must fail, as unbuild
• ant
• start josm

Be sure this is not caused by an not-yet-updated plugin

[jBeata]

Replying to stoecker:

The issue is caused by the change of getCurrentDataSet() in JosmAction, which now got static. Java dependency checking is broken and does not catch such issues properly - thus the ant clean. If you have the problem after ant clean, then somehow the clean does not work reliable or you start the wrong jar. Try following steps:

• ant clean
• svn status --no-ignore --> see what generated files are left --> delete them
• start josm --> must fail, as unbuild
• ant
• start josm

Be sure this is not caused by an not-yet-updated plugin

Thanks for the reply. I did update again JOSM from svn, and delete manually the files from dist and rebuild again with ant. Now JOSM works without this problem.

[ax]

Ticket #5972 has been marked as a duplicate of this ticket.