Mine

proxy ready at http://127.0.0.1:8080/
handling login request from 127.0.0.1:55184
creating proxy for 64.129.40.134:13005 at 127.0.0.1:40035
Argument is out of range.
Parameter name: size
  at System.Net.Sockets.Socket.SendTo (System.Byte[] buffer, Int32 size, SocketFlags flags, System.Net.EndPoint remote_end) [0x00000]
  at SLProxy.Proxy.SendPacket (libsecondlife.Packets.Packet packet, System.Net.IPEndPoint endPoint, Int32 length, Boolean skipZero) [0x00000]
  at SLProxy.Proxy+SimProxy.ReceiveFromClient (IAsyncResult ar) [0x00000]
Argument is out of range.
Parameter name: size
  at System.Net.Sockets.Socket.SendTo (System.Byte[] buffer, Int32 size, SocketFlags flags, System.Net.EndPoint remote_end) [0x00000]
  at SLProxy.Proxy.SendPacket (libsecondlife.Packets.Packet packet, System.Net.IPEndPoint endPoint, Int32 length, Boolean skipZero) [0x00000]
  at SLProxy.Proxy+SimProxy.ReceiveFromClient (IAsyncResult ar) [0x00000]
Argument is out of range.
Parameter name: size
  at System.Net.Sockets.Socket.SendTo (System.Byte[] buffer, Int32 size, SocketFlags flags, System.Net.EndPoint remote_end) [0x00000]
  at SLProxy.Proxy.SendPacket (libsecondlife.Packets.Packet packet, System.Net.IPEndPoint endPoint, Int32 length, Boolean skipZero) [0x00000]
  at SLProxy.Proxy+SimProxy.ReceiveFromClient (IAsyncResult ar) [0x00000]
Argument is out of range.
Parameter name: size
  at System.Net.Sockets.Socket.SendTo (System.Byte[] buffer, Int32 size, SocketFlags flags, System.Net.EndPoint remote_end) [0x00000]
  at SLProxy.Proxy.SendPacket (libsecondlife.Packets.Packet packet, System.Net.IPEndPoint endPoint, Int32 length, Boolean skipZero) [0x00000]
  at SLProxy.Proxy+SimProxy.ReceiveFromClient (IAsyncResult ar) [0x00000]