If Skyliner's suggestion does not work, the problem might be with your Java. It could be an incomplete or corrupt installation. Perhaps due to a previous Java version not uninstalled properly.

You could try this http://www.gnutellaforums.com/333278-post2.html & deleting any previous LW preferences folder you have before reinstalling LW if you have run LW previously.

In previous years, when LW has had loading issues, sometimes the solution was changing the compatibility mode of the program itself to NT or 2000, etc.