.limewire only applies to older users who started using the program before 4.12 I think it was.
When upgrading to pro, it's best to delete the LW preferences folder. So do that. If still connection problems, replace the Gnutella file. See other tips also here
http://www.gnutellaforums.com/connec...t-connect.html. You may need to combine some of those tips, at least until you get connected.