[HtmlUnit] com.gargoylesoftware.htmlunit.ScriptException: Cannot create property

[<Mik...@su...>]

I have encountered a problem with the Javascript support in HtmlUnit 1.1pre5.  I
am recieving the following exception:

com.gargoylesoftware.htmlunit.ScriptException: Cannot create property
     at
com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.getPageInfo(JavaScriptEngine.java:129)
     at
com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:148)
     at
com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptIfPossible(HtmlPage.java:721)
     at
com.gargoylesoftware.htmlunit.html.HtmlPage.executeScriptTagsIfNeeded(HtmlPage.java:738)
     at com.gargoylesoftware.htmlunit.html.HtmlPage.<init>(HtmlPage.java:93)
     at
com.gargoylesoftware.htmlunit.DefaultPageCreator.createPage(DefaultPageCreator.java:45)
     at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:330)
     at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:227)
     at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:169)
     at Test.main(Test.java:9)

when executing the following code:

import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.WebClient;

public class Test {

    public static void main( String args[]) {
     try {
         WebClient webClient = new WebClient();
         HtmlPage page = (HtmlPage)webClient.getPage( new java.net.URL("
http://localhost/test/bug.html"));
     }
     catch( Exception exception) {
         exception.printStackTrace();
     }
    }
}

Attached is a tarball containing bug.html and the referenced Javascript file
Common.js.

(See attached file: htdocs.tar.gz)

I am using:
     Windows 2000 SP2
     IBM Java 1.3
     HtmlUnit 1.1-pre5
     Jakarta Commons HttpClient 2.0-alpha1
     Jakarta Commonos Logging 1.0.1
     Xerces 2.0.2

Mike