LAN conection line are Invisible

[Asester]

I don't now if is a problem or if is me that I don't know how to hack a LAN but the conection lines beteween the varius parts of the lan are invisible......I post a image for you

http://img30.imageshack.us/img30/

or http://yfrog.com/0ulanjzj

Has you see i use LAN scan to see the lan but no lines are shown...
I started the game with 1.54 but i update to 1.55

the only mod I have is a gateway

Thank you

[Montyphy]

Use LAN_probe on each item