Application: gvSIG desktop

parece ser que dependiendo de si se ha ejecutando antes gvSIG en el equipo, y ha dejado inicializadas cosas en las preferencias de java la aplicacion falla al arrancar.

java.lang.RuntimeException: Can't initialize extension 'org.gvsig.coreplugin.PreferencesExtension'.
    at org.gvsig.andami.Launcher.addError(Launcher.java:426)
    at org.gvsig.andami.Launcher.initializeExtensions(Launcher.java:1504)
    at org.gvsig.andami.Launcher.access$100(Launcher.java:203)
    at org.gvsig.andami.Launcher$3.run(Launcher.java:617)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:301)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
    at org.gvsig.andami.ui.AndamiEventQueue.dispatchEvent(AndamiEventQueue.java:50)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Caused by: java.lang.NullPointerException
    at org.gvsig.tools.packageutils.impl.DefaultPackageInfo.matchID(DefaultPackageInfo.java:566)
    at org.gvsig.tools.swing.impl.icontheme.FolderIconTheme.matchID(FolderIconTheme.java:150)
    at org.gvsig.tools.swing.impl.icontheme.DefaultIconThemeManager.get(DefaultIconThemeManager.java:104)
    at org.gvsig.coreplugin.preferences.general.IconThemePage.initializeValues(IconThemePage.java:94)
    at org.gvsig.coreplugin.PreferencesExtension.addPreferencesPage(PreferencesExtension.java:271)
    at org.gvsig.coreplugin.PreferencesExtension.initializeCoreExtensions(PreferencesExtension.java:208)
    at org.gvsig.coreplugin.PreferencesExtension.initialize(PreferencesExtension.java:106)
    at org.gvsig.andami.Launcher.initializeExtensions(Launcher.java:1497)
    ... 17 more

ERROR 823820 AWT-EventQueue-0 org.gvsig.andami.messages.NotificationManager - java.lang.NullPointerException
java.lang.NullPointerException
    at org.gvsig.crs.preferences.JCRSPreferencesPage.isValueChanged(JCRSPreferencesPage.java:223)
    at org.gvsig.andami.preferences.GenericDlgPreferences$1.actionPerformed(GenericDlgPreferences.java:180)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    at java.awt.Component.processMouseEvent(Component.java:6539)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
    at java.awt.Component.processEvent(Component.java:6304)
    at java.awt.Container.processEvent(Container.java:2239)
    at java.awt.Component.dispatchEventImpl(Component.java:4889)
    at java.awt.Container.dispatchEventImpl(Container.java:2297)
    at java.awt.Component.dispatchEvent(Component.java:4711)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4904)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4535)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4476)