** (./python.exe:14342): WARNING **: Missing method System.Net.WebHeaderCollection::Add(HttpRequestHeader,string) in assembly /usr/lib/mono/gac/System/2.0.0.0__b77a5c561934e089/System.dll, referenced in assembly /home/deifante/Projects/python-net/libsecondlife.dll
Traceback (most recent call last):
  File "sltest.py", line 20, in <module>
    if not client.Network.Login(credentials[0], credentials[1], credentials[2], "example", "yourname@here.com"):
System.MissingMethodException: Method not found: 'System.Net.WebHeaderCollection.Add'.
  at <0x00000> <unknown method>
  at libsecondlife.NetworkManager.BeginLogin () [0x00000]
  at libsecondlife.NetworkManager.BeginLogin (LoginParams loginParams) [0x00000]
  at libsecondlife.NetworkManager.Login (LoginParams loginParams) [0x00000]
  at libsecondlife.NetworkManager.Login (System.String firstName, System.String lastName, System.String password, System.String userAgent, System.String start, System.String userVersion) [0x00000]
  at libsecondlife.NetworkManager.Login (System.String firstName, System.String lastName, System.String password, System.String userAgent, System.String userVersion) [0x00000]
  at <0x00000> <unknown method>
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (object,object[])
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000]