problems when I try to import asset store tools

I get this error:

UnityException: Caught exception in Javascript code: TypeError: Result of expression ‘Kharma.LoginDialog.show’ [undefined] is not a function.
UnityEditor.AssetStoreContext.ContextMenuClick (System.Object userData, System.String[ ] options, Int32 selected) (at C:/BuildAgent/work/7535de4ca26c26ac/Editor/Mono/AssetStore/AssetStoreContext.cs:391)

Unity version 4.1.2f1

I get the same error.