Do you use port forwarding? If not, perhaps you can try it for WireShare. It needs to be a port no other program is using.
I recall you have had firewall issues when using the LW4 Clones.
I personally use port forwarding because I found it more reliable than UPnP for my router. UPnP seemed to fail after 2 to 5 days after which I'd become a firewalled ultrapeer. I think Bigjx also uses port forwarding instead of UPnP.