Problems with clicking usually seem to be Java related, so make sure your Java's up to date. Use the JRE offline installer here
http://java.sun.com/javase/downloads/index.jsp
Remove your current Java version before you install the new one

After you've done that, try reinstalling LW also using it's offline installer
http://www.limewire.com/english/content/download.shtml

Check the link below, it might help if you're getting stuck at language options
Grey screen/language options