[HtmlUnit] Error using WebClient.getPage(URL)

[Ryan C. <ry...@AS...>]

Any idea why this might be happening?

Exception in thread "main" java.lang.NoSuchMethodError
        at org.cyberneko.html.parsers.DOMParser.<init>(Unknown Source)
        at
com.gargoylesoftware.htmlunit.html.HtmlPage.createDocument(HtmlPage.java:208)

        at
com.gargoylesoftware.htmlunit.html.HtmlPage.<init>(HtmlPage.java:82)
        at
com.gargoylesoftware.htmlunit.DefaultPageCreator.createPage(DefaultPageCreator.java:45)

        at
com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:315)
        at
com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:238)
        at
com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:180)
        at test.Test.main(Test.java:34)
-----
Here's the code:

   WebClient wc = new WebClient();
   URL url = new URL("http://www.google.com");
   Page p = wc.getPage(url);