Interesting. I downlded & installed LW 4.6 without any issues. I downlded the installer to the computer & saved it by putting 4.6 at the end of it so I knew which installer it was.
Which operating system are you using? Windows or mac or ...?
If it's mac there could be a reason. See point 2 in the following link:
http://www.gnutellaforums.com/showth...threadid=34233