Downgrading to LimeWire 4 from 5 & resuming incomplete downloads (ignore the download preferences moving points, just the first point for the LW 4.16 link)
... else
http://www.phex.org/wiki/index.php/Get_Phex <- Get
Phex here!
BTW have you tried setting up a Test user account to see if LW runs in that account? A test account on your computer can be deleted easily & quickly.
Yes, unfortunately some programs do take some mucking around on 'some' people's systems to get running. Especially java based programs. But not only those.
The life of computers lol
Some software on 'some' systems can be a hard & long time getting them to run.