1. Open attached soultion
2. Run ChatServer.exe
==>
Program crashes

What is going on inside:
If HostTopology has a special connection config added then a code in NetLibManager invokes
public HostTopologyInternal(HostTopology topology) { ... } and this invokes next function with "i=0"

public ConnectionConfig GetSpecialConnectionConfig(int i)
{
if (i > m_SpecialConnections.Count || i == 0)
throw new ArgumentException("special configuration index is out of valid range");
return m_SpecialConnections[i - 1];
}

This causes an exception to be thrown.