Bug of the plugin validator

[hike39 <horst@…>]

Hello,
everytime when I start the validator then a bug is reported.
The detailed information is:

Path: trunk
URL: ​http://josm.openstreetmap.de/svn/trunk
Repository Root: ​http://josm.openstreetmap.de/svn
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Revision: 1822
Node Kind: directory
Last Changed Author: Gubaer
Last Changed Rev: 1822
Last Changed Date: 2009-07-21 20:42:50 +0200 (Tue, 21 Jul 2009)

Memory Usage: 21 MB / 254 MB (5 MB allocated, but free)
Java version: 1.6.0_13

Plugins: openstreetbugsslippymapvalidatorwmsplugin
Plugin openstreetbugs Version: 16564
Plugin slippymap Version: 16294
Plugin validator Version: 16439
Plugin wmsplugin Version: 16442

java.lang.NoSuchFieldError: ds

at org.openstreetmap.josm.plugins.validator.ValidateAction.doValidate(ValidateAction.java:70)
at org.openstreetmap.josm.plugins.validator.ValidateAction.actionPerformed(ValidateAction.java:45)
at org.openstreetmap.josm.plugins.validator.ValidatorDialog.actionPerformed(ValidatorDialog.java:305)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)