Problem with updating plugins (cadastre does not start) on debian

[skyper]

I think there is a problem with updating plugins.
I have the debian package josm-plugins installed. These plugins are installed under /usr/share/josm/plugins. Even before downloading the plugin list the first time I already have some plugins available (local).

1. start josm
2. download plugin list
3. install cadastre plugin
4. restart

Exception with package from stable

Using /usr/lib/jvm/java-6-openjdk/bin/java to execute josm.
Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2012-03-06 02:36:00
Last Changed Author: Don-vip
Revision: 5046
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2012-03-05 22:41:23 +0100 (Mon, 05 Mar 2012)
Last Changed Rev: 5046

lade Plugin 'cadastre-fr' (Version 22295)
Pluging cadastre-fr v2.0 started...
current cache directory: /home/gast/.josm-latest/plugins/cadastrewms/
Replace source year AAAA by current year 2012
org.openstreetmap.josm.plugins.PluginException: Ein Fehler ist in dem Plugin cadastre-fr aufgetreten.
	at org.openstreetmap.josm.plugins.PluginInformation.load(PluginInformation.java:281)
	at org.openstreetmap.josm.plugins.PluginHandler.loadPlugin(PluginHandler.java:477)
	at org.openstreetmap.josm.plugins.PluginHandler.loadPlugins(PluginHandler.java:535)
	at org.openstreetmap.josm.plugins.PluginHandler.loadLatePlugins(PluginHandler.java:574)
	at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:256)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
	at org.openstreetmap.josm.plugins.PluginInformation.load(PluginInformation.java:272)
	... 4 more
Caused by: java.lang.NoSuchMethodError: org.openstreetmap.josm.tools.I18n.tr(Ljava/lang/String;)Ljava/lang/String;
	at cadastre_fr.CadastrePlugin.refreshConfiguration(CadastrePlugin.java:250)
	at cadastre_fr.CadastrePlugin.<init>(CadastrePlugin.java:166)
	... 9 more

With the plugin package from debian testing josm starts without exception, but still does not use the latest plugin but the one installed under /usr/share.