unable to load grasshopper

Getting the following error:

here is a report from the command line

RhinoScript loaded.

Loading Rhino Render, version 1.00, Mar  9 2011, 11:41:28

Command: PlugInManager

Command: _OptionsPage

Page to display <Render> ( View  SpaceBall  Aliases  Appearance  Colors  OpenGL  AdvancedSettings  Wireframe  Grid  Objects  Points  Curves  Surfaces  Meshes  OtherSettings  Shaded  Rendered  Ghosted  XRay  Files  General  Mouse  Keyboard  Plugins  ModelingAids  Nudge  SmartTrack  CursorToolTips  ContextMenu  ControlPointMenu  ObjectMenu  SelectionMenu  RhinoScript  RenderOptions  RhinoMail  Alerter ): _PlugIns

Rhino.NET plug-in: C:\Program Files (x86)\Rhinoceros 4.0\Plug-ins\Grasshopper\GrasshopperPlugin.rhp

- referenced assembly count: 5

   - Rhino_DotNet

   - mscorlib

   - System.Windows.Forms

   - Grasshopper

   - System

- plug-in passes RhinoDot_NET.DLL reference version check

- loading assembly using Reflection::Assembly::LoadFrom

- attempting to find definition of MRhinoPlugInAttributes subclass

   - 12 exported types

Rhino.NET successfully loaded C:\Program Files (x86)\Rhinoceros 4.0\Plug-ins\Grasshopper\GrasshopperPlugin.rhp

Unable to load GrasshopperPlugin.rhp plug-in: application initialization failed.

I am new to rhino and grasshopper, any help will be appreciated