check your out.txt file in the \Applications\LimeWire directory and see if it starts out like this. Unfortunately I don't have a fix and neither does LimeWire. I bought the pro version but their support guy can't fix the problem.

Exception occurred during event dispatching:
java.lang.VerifyError: (class: com/limegroup/gnutella/xml/LimeXMLDocument, method: initialize signature: (Lorg/xml/sax/InputSource;)V) Incompatible object argument for function call
at com.limegroup.gnutella.xml.gui.InputPanel.construc tXML(Unknown Source)
at com.limegroup.gnutella.xml.gui.InputPanel.getInput (Unknown Source)
at com.limegroup.gnutella.gui.search.SearchMediator.t riggerSearchXML(Unknown Source)
at com.limegroup.gnutella.gui.search.SearchListener.a ctionPerformed(Unknown Source)
at javax.swing.AbstractButton.fireActionPerformed(Abs tractButton.java:1458)