NullReferenceException: Object reference not set to an instance of an object
ShaderForge.SF_PreviewWindow.SetupPreview () (at <2662c5e5d29042e5a410f23872feb92c>:0)
ShaderForge.SF_PreviewWindow..ctor (ShaderForge.SF_Editor editor) (at <2662c5e5d29042e5a410f23872feb92c>:0)
ShaderForge.SF_Editor.InitializeInstance (UnityEngine.Shader initShader) (at <2662c5e5d29042e5a410f23872feb92c>:0)
ShaderForge.SF_Editor.Init (UnityEngine.Shader initShader) (at <2662c5e5d29042e5a410f23872feb92c>:0)
ShaderForge.SF_Editor.InitEmpty () (at <2662c5e5d29042e5a410f23872feb92c>:0)