Thanks! I didn't need to change my JRE Version.

Delete LW's preferences folder when LW's properly closed. See point 3 here & also point 2 if you've used older versions of LW in the past (there could be a folder in either location).
Fixes for LimeWire (http://www.gnutellaforums.com/windows/36420-fixes-limewire-when-lw-isnt-operating-should.html)
This will kill all of your settings within options, you'll have to go back through afterwards & reset things. If you're not sure of your settings, go through LW's tools > options & write them all down, so that you can reset things later.