serialzation error

[Icassell]

System.Runtime.Serialization.SerializationException: Type UnityEngine.Hash128 is not marked as Serializable.
at System.Runtime.Serialization.Formatters.Binary.BinaryCommon.CheckSerializable (System.Type type, ISurrogateSelector selector, StreamingContext context) [0x0002c] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/BinaryCommon.cs:119
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.GetObjectData (System.Object obj, System.Runtime.Serialization.Formatters.Binary.TypeMetadata& metadata, System.Object& data) [0x00054] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectWriter.cs:386
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteObject (System.IO.BinaryWriter writer, Int64 id, System.Object obj) [0x00000] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectWriter.cs:306
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteObjectInstance (System.IO.BinaryWriter writer, System.Object obj, Boolean isValueObject) [0x00062] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectWriter.cs:293
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteValue (System.IO.BinaryWriter writer, System.Type valueType, System.Object val) [0x0006b] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectWriter.cs:748
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteGenericArray (System.IO.BinaryWriter writer, Int64 id, System.Array array) [0x000e3] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectWriter.cs:519
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteArray (System.IO.BinaryWriter writer, Int64 id, System.Array array) [0x00085] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectWriter.cs:471
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteObjectInstance (System.IO.BinaryWriter writer, System.Object obj, Boolean isValueObject) [0x0004f] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectWriter.cs:290
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteQueuedObjects (System.IO.BinaryWriter writer) [0x00005] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectWriter.cs:271
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteObjectGraph (System.IO.BinaryWriter writer, System.Object obj, System.Runtime.Remoting.Messaging.Header[] headers) [0x0001f] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectWriter.cs:256
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize (System.IO.Stream serializationStream, System.Object graph, System.Runtime.Remoting.Messaging.Header[] headers) [0x000a4] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.cs:232
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize (System.IO.Stream serializationStream, System.Object graph) [0x00000] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.cs:211
at ReferenceFinderData.WriteToChache () [0x00143] in D:\WorkProjects\EditShot\Assets\Editor\ReferenceFinder\ReferenceFinderData.cs:173
at ReferenceFinderData.CollectDependenciesInfo () [0x0009e] in D:\WorkProjects\EditShot\Assets\Editor\ReferenceFinder\ReferenceFinderData.cs:39
UnityEngine.Debug:LogError(Object)
ReferenceFinderData:CollectDependenciesInfo() (at Assets/Editor/ReferenceFinder/ReferenceFinderData.cs:47)
ReferenceFinderWindow:InitDataIfNeeded() (at Assets/Editor/ReferenceFinder/ReferenceFinderWindow.cs:63)
ReferenceFinderWindow:FindRef() (at Assets/Editor/ReferenceFinder/ReferenceFinderWindow.cs:38)

我在一个新项目，使用了您的项目，出现了上述错误，向您请教一下。