azazel,
Try deleting the LW preference folder, points 2, & 3, in this thread:
Fixes for Limewire when LW isn't operating as it should!.
This will create a new shared folder in the default location. So you should be able to open LW and then you can follow Grandpa's suggestion to point LW to the new shared folder location.
It'll also change all your settings back to the default, so you'll have to set them back to how you had them.
*BTW - 360share pro is a ripoff of limewire. Get Pro from the official site:
http://www.limewire.com/english/content/download.shtml