Smuxi

Hello,
I am a new user of smuxi.
I today added my twitter account to the program. This exception occurs when it tries to fetch data from twitter.
I'm connecting through smuxi-server hosted on a debian 7.

Exception Type:
System.InvalidCastException

Exception Message:
Object must implement IConvertible.

Exception StackTrace:

Server stack trace: 
   at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
   at System.Runtime.Serialization.FormatterConverter.Convert(Object value, Type type)
   at System.Runtime.Serialization.SerializationInfo.GetValue(String name, Type type)
   at System.Collections.Generic.Dictionary`2.OnDeserialization(Object sender)
   at System.Runtime.Serialization.ObjectManager.RaiseDeserializationEvent()
   at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
   at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
   at System.Runtime.Remoting.Channels.CoreChannel.DeserializeBinaryResponseMessage(Stream inputStream, IMethodCallMessage reqMsg, Boolean bStrictBinding)
   at System.Runtime.Remoting.Channels.BinaryClientFormatterSink.SyncProcessMessage(IMessage msg)

Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at Smuxi.Engine.GroupChatModel.get_Persons()
   at Smuxi.Frontend.Gnome.GroupChatView.Sync()
   at Smuxi.Frontend.Gnome.TwitterGroupChatView.Sync()
   at Smuxi.Fronten