Josm does not start anymore

[hotelsierra]

What steps will reproduce the problem?

1. Trying to start the programme via web start
2. Trying to sart programme after complete new installation of JOSM locally

What is the expected result?

What happens instead?

Error message and shut down of starting process. Update of plugins not possible because JOSM did not finish the startup procedure

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

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2014-07-03 22:03:52
Last Changed Author: Don-vip
Revision: 7287
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2014-07-04 00:00:19 +0200 (Fri, 04 Jul 2014)
Last Changed Rev: 7287

Identification: JOSM/1.5 (7287 de) Windows 8 64-Bit
Memory Usage: 43 MB / 494 MB (11 MB allocated, but free)
Java version: 1.7.0_51, Oracle Corporation, Java HotSpot(TM) Client VM
VM arguments: [-Xms16m, -Xmx512m]

Plugin: DirectUpload
Plugin: RoadSigns
Plugin: SeaMapEditor
Plugin: Tracer2
Plugin: editgpx (30414)
Plugin: imageryadjust
Plugin: measurement
Plugin: merge-overlap
Plugin: openstreetbugs (30413)
Plugin: print
Plugin: turnlanes (30413)
Plugin: turnrestrictions

java.lang.NoClassDefFoundError: org/openstreetmap/josm/io/MirroredInputStream
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Unknown Source)
	at org.openstreetmap.josm.plugins.PluginInformation.loadClass(PluginInformation.java:334)
	at org.openstreetmap.josm.plugins.PluginHandler.loadPlugin(PluginHandler.java:559)
	at org.openstreetmap.josm.plugins.PluginHandler.loadPlugins(PluginHandler.java:624)
	at org.openstreetmap.josm.plugins.PluginHandler.loadLatePlugins(PluginHandler.java:664)
	at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:408)
Caused by: java.lang.ClassNotFoundException: org.openstreetmap.josm.io.MirroredInputStream
	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 java.lang.ClassLoader.loadClass(Unknown Source)
	... 7 more

[stoecker]

@Don-Vip:

a bug in plugin loader? It should not prevent loading the main program, when we have an old plugin.

[Don-vip]

Not a regression at least we didn't touch anything in plugin code recently.

[Don-vip]

Replying to Don-vip:

Not a regression at least we didn't touch anything in plugin code recently.

... or maybe I reworked a Java 7 exception handling badly, maybe NoClassDefFoundError was catched before and is not anymore.

[Don-vip]

In 7294/josm:

fix #10242 - catch NoClassDefFoundError when ClassNotFoundException is catched