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Try this. Many members have had luck with this suggestion.
setup freezes
If this doesn't solve the Issue, then you might try an Older Version. Many members appear to be having alot of Problems with the Later Versions.
I will suggest you use an older version that has proved to be the most stable versions ever. 4.12.6. or 4.12.3
OldVersion - Newer isn't always better ! Or
Install this OFFLINE installer version of LW:
http://www9.limewire.com/download/LimeWireWin-full.exe
Hope one of these suggestions Help.