Grasshopper loading error in fresh WIP install

Dear all,
I recently have installed the WIP version of Rhino couldn’t get GHpython to load in grasshopper. Can anybody help to get this fixed?

During the launch of the grashopper plugin, I get a dialog window with the title “grasshopper loading errors”. In that window I see one message that I can Export or copy to a clipboard. The content of that message can be find below.

Priority: GhpyLoader
Object reference not set to an instance of an object.