Tried all of the above again and got the same response - nothing happens when I click the desktop icon, or the executable jar file.

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

I tried all of the above one last time - this time it has worked - but that was yesterday. I'll see if it's still working today!

Thanks for taking the time to help. JL.