Have you tried these fixes yet...
Try deleting your preference folder...
Fixes for Limewire when LW isn't operating as it should
If it still won't open uninstall Java from the add/remove programs and use JRE 5.11 using the offline installer (4th one down)....
Java SE Downloads - Previous Release - JDK 5
If you have tried those fixes with no success could you supply these details please....
http://www.gnutellaforums.com/connec...-help-you.html