I got the above from going to Library File>Add Folder to Share. Then pressed the "Find in:" location.
Your problem sounds odd. I wonder if you have a Java problem. What version of Limewire (LW) & Java do you have? (Go to LW's menu Help>About LW...) Will show both LW & Java version.
Perhaps you should Try deleting your LW Preferences folder whilst LW is closed; instructions here:
Fixes for Limewire But make a note of your settings 1st b/c you'll need to reset them. Also update your Java to 1.5