error CS0246

Assets/Plugins/whydoidoit.com/Serialization/UnitySerializationExtensions.cs(770,32): error CS0246: The type or namespace name `ClothRenderer’ could not be found. Are you missing a using directive or an assembly reference?

Script:

InteractiveCloth was removed in Unity 5.0 IIRC. So if you’re using Unity 5.x you’ll need to remove any references to ClothRenderer.