I had the same problem and solved it (as far as the program itself reloading 360Share Pro instead of LimeWire).
First of all you must have a copy of your original LimeWire download (you do make backups of all your downloads, right?)
I had to UNinstall the 360Share Pro AND LimeWire completely. Restart the computer. Then re-run my LimeWire backup installation.
Good Luck.
Pete