Ok, how about if you download a version 4.10 (see the link in one of my other posts) & see if that one will at least load...that way we know it's a version-related issue.
If that older version will load, we can work on any connection problems you might be having.

Or, if you're completely pissed-off with LW by now & never want to see it again you could try Phex or Bearshare...they both connect to the Gnutella network (same as LW). If you're interested, there are links for download below.
Phex

BearShare