System.NullReferenceException: Object reference not set to an instance of an object
  at System.Array.Copy (System.Array sourceArray, Int32 sourceIndex, System.Array destinationArray, Int32 destinationIndex, Int32 length) [0x00104] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System/Array.cs:979
  at System.Collections.ArrayList.CopyTo (Int32 index, System.Array array, Int32 arrayIndex, Int32 count) [0x0002d] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Collections/ArrayList.cs:3064
  at System.Collections.ArrayList.CopyTo (System.Array array, Int32 arrayIndex) [0x00000] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Collections/ArrayList.cs:3046
  at System.MonoCustomAttrs.GetCustomAttributes (ICustomAttributeProvider obj, System.Type attributeType, Boolean inherit) [0x0026c] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System/MonoCustomAttrs.cs:259
  at System.MonoType.GetCustomAttributes (System.Type attributeType, Boolean inherit) [0x00011] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System/MonoType.cs:582
  at System.Runtime.Serialization.DataContractSerializer.RegisterTypeAsKnown (System.Type type) [0x00032] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/DataContractSerializer.cs:241
  at System.Runtime.Serialization.DataContractSerializer.PopulateTypes (IEnumerable`1 knownTypes) [0x00058] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/DataContractSerializer.cs:226
  at System.Runtime.Serialization.DataContractSerializer..ctor (System.Type type, IEnumerable`1 knownTypes) [0x00029] in /Developer/MonoTouch/Source/mono/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/DataContractSerializer.cs:74
  at System.Runtime.Serialization.DataContractSerializer..ctor (System.Type type) [0x00000] in <filename unknown>:0
  at System.ServiceModel.Channels.MessageHeader.CreateHeader (System.String name, System.String ns, System.Object value, Boolean must_understand, System.String actor, Boolean relay) [0x00000] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Channels/MessageHeader.cs:88
  at System.ServiceModel.Channels.MessageHeader.CreateHeader (System.String name, System.String ns, System.Object value, Boolean must_understand, System.String actor) [0x00000] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Channels/MessageHeader.cs:76
  at System.ServiceModel.Channels.MessageHeader.CreateHeader (System.String name, System.String ns, System.Object value, Boolean must_understand) [0x00000] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Channels/MessageHeader.cs:64
  at System.ServiceModel.Channels.MessageHeaders.set_Action (System.String value) [0x00021] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Channels/MessageHeaders.cs:316
  at System.ServiceModel.Channels.MessageImplBase..ctor (System.ServiceModel.Channels.MessageVersion version, System.String action, System.ServiceModel.Channels.AttributeCollection attributes) [0x00023] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Channels/MessageImpl.cs:245
  at System.ServiceModel.Channels.SimpleMessage..ctor (System.ServiceModel.Channels.MessageVersion version, System.String action, System.ServiceModel.Channels.BodyWriter body, Boolean isFault, System.ServiceModel.Channels.AttributeCollection attributes) [0x00000] in <filename unknown>:0
  at System.ServiceModel.Channels.Message.CreateMessage (System.ServiceModel.Channels.MessageVersion version, System.String action, System.ServiceModel.Channels.BodyWriter body) [0x00022] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Channels/Message.cs:405
  at System.ServiceModel.Dispatcher.DataContractMessagesFormatter.PartsToMessage (System.ServiceModel.Description.MessageDescription md, System.ServiceModel.Channels.MessageVersion version, System.String action, System.Object[] parts) [0x00000] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/BaseMessagesFormatter.cs:383
  at System.ServiceModel.Dispatcher.BaseMessagesFormatter.SerializeRequest (System.ServiceModel.Channels.MessageVersion version, System.Object[] parameters) [0x000d4] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/BaseMessagesFormatter.cs:192
  at System.ServiceModel.Dispatcher.OperationFormatter.SerializeRequest (System.ServiceModel.Channels.MessageVersion messageVersion, System.Object[] parameters) [0x00000] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/BaseMessagesFormatter.cs:95
  at System.ServiceModel.MonoInternal.ClientRuntimeChannel.CreateRequest (System.ServiceModel.Dispatcher.ClientOperation op, System.Object[] parameters) [0x0001e] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:634
  at System.ServiceModel.MonoInternal.ClientRuntimeChannel.Request (System.ServiceModel.Description.OperationDescription od, System.Object[] parameters) [0x0002d] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:532
  at System.ServiceModel.MonoInternal.ClientRuntimeChannel.DoProcess (System.Reflection.MethodBase method, System.String operationName, System.Object[] parameters) [0x00038] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:502
  at System.ServiceModel.MonoInternal.ClientRuntimeChannel.Process (System.Reflection.MethodBase method, System.String operationName, System.Object[] parameters) [0x0001c] in /Developer/MonoTouch/Source/mono/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:479