LinkedList.toArray giver mig problemer

Hejsa eksperter, jeg har et problem med følgende kode-stump (lnierne 69-76 begge incl.):

LinkedList classNames = new LinkedList();
        for (int i=0; i<files.length; i++) {
            String className = PATH_TO_SEATING_CALCS + "." + files[i].substring(0, files[i].indexOf("."));
            System.out.println("Added [ "+className+" ] to list");
            classNames.add(classNames);
        }

        return (String[])classNames.toArray(new String[classNames.size()]);

De giver mig følgende Exception:

java.lang.ArrayStoreException
    at java.util.LinkedList.toArray(LinkedList.java:657)
    at application.utils.SeatingUtilities.getSeatingCalcClassNames(SeatingUtilities.java:77)
    at application.utils.SeatingUtilities.getValidSeatingCalcs(SeatingUtilities.java:35)
    at Test$2.actionPerformed(Test.java:72)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1786)
    at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1839)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:245)
    at java.awt.Component.processMouseEvent(Component.java:5100)
    at java.awt.Component.processEvent(Component.java:4897)
    at java.awt.Container.processEvent(Container.java:1569)
    at java.awt.Component.dispatchEventImpl(Component.java:3615)
    at java.awt.Container.dispatchEventImpl(Container.java:1627)
    at java.awt.Component.dispatchEvent(Component.java:3477)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
    at java.awt.Container.dispatchEventImpl(Container.java:1613)
    at java.awt.Window.dispatchEventImpl(Window.java:1606)
    at java.awt.Component.dispatchEvent(Component.java:3477)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
    at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)

Og jeg er FULDSTÆNDIG blank, efter hvad jeg kan læse mig frem til via. sun's forums, samt dokumentationen til Java bliver ArrayStoreException kun smidt (thrown) hvis et af elementerne i LinkedListen ikke er af den angivne type... og ALLE elementerne er jo Strings (i min kode)....

PLEAAAASE help, jeg er rimelig desperat (men på den gode måde ;-))

På forhånd tak, Anders