Why do I get a NoSuchFieldError exception in Java?

I'm trying to display any website using Eclipse internal browser.

Here's the code I'm trying:

public class WebTest {

    public static void main(String[] args) {
        NativeInterface.open();
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JFrame frame = new JFrame("YouTube Viewer");
                frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
                frame.getContentPane().add(getBrowserPanel(),
                        BorderLayout.CENTER);
                frame.setSize(800, 600);
                frame.setLocationByPlatform(true);
                frame.setVisible(true);
            }
        });
        NativeInterface.runEventPump();
        // don't forget to properly close native components
        Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
            @Override
            public void run() {
                NativeInterface.close();
            }
        }));
    }

    public static JPanel getBrowserPanel() {
        JPanel webBrowserPanel = new JPanel(new BorderLayout());
        JWebBrowser webBrowser = new JWebBrowser();
        webBrowserPanel.add(webBrowser, BorderLayout.CENTER);
        webBrowser.setBarsVisible(false);
        webBrowser.navigate("http://ift.tt/1DVqgBB");
        return webBrowserPanel;
    }
}

However, when I try to run it, I get the following exception:

Exception in thread "main" java.lang.NoSuchFieldError: DEPENDENCIES_CHECKVERSIONS
at chrriis.dj.nativeswing.swtimpl.NSSystemPropertySWT.<clinit>(NSSystemPropertySWT.java:94)
at chrriis.dj.nativeswing.swtimpl.core.SWTNativeInterface.<clinit>(SWTNativeInterface.java:86)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at chrriis.dj.nativeswing.swtimpl.internal.NativeCoreObjectFactory.create(NativeCoreObjectFactory.java:38)
at chrriis.dj.nativeswing.swtimpl.NativeInterface.<clinit>(NativeInterface.java:22)
at WebTest.main(WebTest.java:14)

So there is clearly something wrong with my dependencies... But I'm not sure how do I fix this, I have included all necessary jars:

Any ideas?