Reboot, try again.
Online installations can be messy.
I'd recommend OFFLINE installations of both Java & LW.
(1) Remove all previous versions of Java, then reinstall java with Offline installer: Download Java software from Sun Microsystems

(2) If you had a previous version of LW on computer earlier, for new version it is best to delete the previous LW Preferences folder; delete your LW Preferences folder whilst LW is closed; instructions here: Point #2 & 3 in Fixes for Limewire (sample image included at bottom of page.)

http://www.gnutellaforums.com/genera...der-vista.html

(3) Run this small utility to clean registry: Crap Cleaner

(4) Offline version of LW: http://www9.limewire.com/download/LimeWireWin-full.exe