I can´t open the type of any variable I create in my prefab

I can´t open the type window of any variable i create with my prefab selected. And in the flow graph is impossible to use it because right clicking on it is useless. I have an error in console:

null texture passed to GUI.DrawTexture
UnityEngine.GUI:DrawTexture(Rect, Texture)
Ludiq.LudiqGUI:OnHeaderIconGUI(EditorTexture, Rect) (at C:/Users/Lazlo/Projects/Ludiq/Ludiq.Core/Editor/Interface/LudiqGUI.cs:905)
Ludiq.LudiqGUI:OnHeaderGUI(GetHeaderTitleHeightDelegate, GetHeaderDescriptionHeightDelegate, OnHeaderTitleGUIDelegate, OnHeaderDescriptionGUIDelegate, EditorTexture, Rect, Single&, Boolean, Single) (at C:/Users/Lazlo/Projects/Ludiq/Ludiq.Core/Editor/Interface/LudiqGUI.cs:849)
Ludiq.LudiqGUI:OnHeaderGUI(Metadata, Metadata, EditorTexture, Rect, Single&, Boolean) (at C:/Users/Lazlo/Projects/Ludiq/Ludiq.Core/Editor/Interface/LudiqGUI.cs:991)
Ludiq.GraphEditor:OnHeaderGUI(Rect) (at C:/Users/Lazlo/Projects/Ludiq/Ludiq.Graphs/Editor/Inspection/GraphEditor.cs:40)

Please help me, I have bought this asset (BOLT) today ......

Jose Cumella