Do not use add or remove programs to uninstall it. Try to do so by clicking on the start menu. Then scroll to all programs and wait for another column to appear now look for LimeWire it should be on the far right hand side at least that is where it is on my PC. Once you find LimeWire highlight it and wait for yet another column to appear. Once this has happened you should see Uninstall. Click it. This will help you properly uninstall it. Now if LimeWire is already uninstalled and you still can't get it to reinstall properly you may need to reinstall Java using the offline installer before reinstalling LimeWire.