I was holding my eyes wide open and turning my head as far left and far right as I could to see if I could make pupil center reach 0 or 1 and an internal exception in gaze manager occurred dropping the stream handler.
The GazeManager died and the following was found in the console output window:
A first chance exception of type 'Newtonsoft.Json.JsonReaderException' occurred in Newtonsoft.Json.dll
Exception while running IncomingStreamHandler: After parsing a value an unexpected character was encountered: #. Path 'values.frame.avg.x', line 1, position 88.
at Newtonsoft.Json.JsonTextReader.ParsePostValue()
at Newtonsoft.Json.JsonTextReader.ReadInternal()
at Newtonsoft.Json.JsonTextReader.Read()
at Newtonsoft.Json.JsonReader.Skip()
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetExtensionData(JsonObjectContract contract, JsonProperty member, JsonReader reader, String memberName, Object o)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
at Newtonsoft.Json.JsonSerializer.Deserialize(JsonReader reader, Type objectType)
at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)
at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value)
at TETCSharpClient.GazeManager.OnGazeApiResponse(String response) in c:\GIT\TETCSharpClient\TETCSharpClient\GazeManager.cs:line 136
at TETCSharpClient.IncomingStreamHandler.Work() in c:\GIT\TETCSharpClient\TETCSharpClient\GazeApiManager.cs:line 274
IncommingStreamHandler closing down