I would assume that you recently updated Java and that was probably the time Limewire stopped working. No matter if you are using Basic or Pro it is the cause for this. Go to add/remove programs under the Control pannel and uninstall all versions of Java and Limewire. Then reinstall Limewire only. Let Limewire install Java for you and you should have no more problems. It worked for me. Also don't update Java until Limewire can get the problem fixed or you will have to do the same thing all over again.