gvSIG sensors

Al intentar abrir un documento tipo chart aparece la siguiente excepción

ERROR [AWT-EventQueue-1] (NotificationManager.java:107) - java.lang.IllegalArgumentException: illegal component position
java.lang.IllegalArgumentException: illegal component position
    at java.awt.Container.addImpl(Unknown Source)
    at javax.swing.JLayeredPane.addImpl(Unknown Source)
    at javax.swing.JDesktopPane.addImpl(Unknown Source)
    at java.awt.Container.add(Unknown Source)
    at org.gvsig.coreplugin.mdiManager.NewSkin$MyDesktopPane.add(NewSkin.java:1279)
    at org.gvsig.coreplugin.mdiManager.NewSkin.addJInternalFrame(NewSkin.java:542)
    at org.gvsig.coreplugin.mdiManager.NewSkin.addWindow(NewSkin.java:281)
    at org.gvsig.coreplugin.mdiManager.NewSkin.addWindow(NewSkin.java:357)
    at org.gvsig.app.project.documents.gui.ProjectWindow.openDocumentWindow(ProjectWindow.java:336)
    at org.gvsig.app.project.documents.gui.ProjectWindow.abrir(ProjectWindow.java:323)
    at org.gvsig.app.project.documents.gui.ProjectWindow.access$200(ProjectWindow.java:83)
    at org.gvsig.app.project.documents.gui.ProjectWindow$7.actionPerformed(ProjectWindow.java:742)
    at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    at javax.swing.AbstractButton$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.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 org.gvsig.andami.ui.AndamiEventQueue.dispatchEvent(AndamiEventQueue.java:67)
    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)

El problema ha surgido al crear dos gráficas de barras que comparten el eje X