Cannot open a file

[wolfgang@…]

After Start, a Click on File-Open (Strg-O) generates this Error: (in Language de and en)
(over Menue and Butten and STRG-O)
What is wrong at my compter?
java ist 1.6.0_13-b03, XP prof.

Path: trunk
URL: ​http://josm.openstreetmap.de/svn/trunk
Repository Root: ​http://josm.openstreetmap.de/svn
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Revision: 1788
Node Kind: directory
Last Changed Author: stoecker
Last Changed Rev: 1788
Last Changed Date: 2009-07-14 18:20:56 +0200 (Tue, 14 Jul 2009)

Memory Usage: 33 MB / 254 MB (10 MB allocated, but free)
Java version: 1.6.0_13

Plugins: AgPifoJopenstreetbugsremotecontrolvalidatorwaydownloaderwmsplugin
Plugin AgPifoJ Version: 16315
Plugin openstreetbugs Version: 16564
Plugin remotecontrol Version: 16290
Plugin validator Version: 16439
Plugin waydownloader Version: 16290
Plugin wmsplugin Version: 16442

java.lang.NullPointerException

at javax.swing.ImageIcon.<init>(Unknown Source)
at javax.swing.ImageIcon.<init>(Unknown Source)
at sun.swing.WindowsPlacesBar.<init>(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.updateUseShellFolder(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.installComponents(Unknown Source)
at javax.swing.plaf.basic.BasicFileChooserUI.installUI(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.installUI(Unknown Source)
at javax.swing.JComponent.setUI(Unknown Source)
at javax.swing.JFileChooser.updateUI(Unknown Source)
at javax.swing.JFileChooser.setup(Unknown Source)
at javax.swing.JFileChooser.<init>(Unknown Source)
at javax.swing.JFileChooser.<init>(Unknown Source)
at org.openstreetmap.josm.actions.DiskAccessAction.createAndOpenFileChooser(DiskAccessAction.java:27)
at org.openstreetmap.josm.actions.OpenFileAction.actionPerformed(OpenFileAction.java:35)
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)

[stoecker]

Closed as duplicate of #2032.