OK, I get rid of that crap. But now I've got rendering problems. See attached screenshot.

I don't know if this helps or not, but I commented out that line that throws the exception and the Ribbon appears to work fine, or at least I haven't run into any scenarios yet that are problematic.

Hi. Actually there is a solution for this posted on the codeproject page (http://www.codeproject.com/Messages/4020406/Re-Here-is-a-Solution-that-works-for-2-0-and-4-0-n.aspx). Credits foes to han6man.

On the GlobalHook.cs file
add:

using System.Diagnostics;

replace InstallHook with

/// <summary>

    /// Installs the actual unsafe hook
    /// </summary>
    private void InstallHook()
    {
        /// Error check
        if (Handle != 0) throw new Exception("Hook is already installed");

        #region htype
        int htype = 0;

        switch (HookType)
        {
            case HookTypes.Mouse:
                htype = WinApi.WH_MOUSE_LL;
                break;
            case HookTypes.Keyboard:
                htype = WinApi.WH_KEYBOARD_LL;
                break;
            default:
                throw new Exception("HookType is not supported");
        }
        #endregion

        /// Delegate to recieve message
        _HookProc = new HookProcCallBack(HookProc);

        /// Hook
        _hHook = WinApi.SetWindowsHookEx(htype, _HookProc, Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]), 0);
        _hHook = WinApi.SetWindowsHookEx(htype, _HookProc, GetCurrentModule().BaseAddress, 0);

        /// Error check
        if (Handle == 0) throw new Win32Exception(Marshal.GetLastWin32Error());
    }

add the method:

public static ProcessModule GetCurrentModule()

    {
        // need instance handle to module to create a system-wide hook
        Module[] list = System.Reflection.Assembly.GetExecutingAssembly().GetModules();
        System.Diagnostics.Debug.Assert(list != null && list.Length > 0);

        var currentProcess = Process.GetCurrentProcess();
        var modules = currentProcess.Modules;
        ProcessModule mod = null;
        foreach (ProcessModule m in modules)
            /*
            //for .net 2 we will find module here
            if (m.ModuleName == list[0].Name)
            {
                mod = m;
                break;
            }
            */
        //for .net 4 take current module
        if (mod == null)
            mod = Process.GetCurrentProcess().MainModule;

        return mod;
    }

dont inherit RibbonForm

Dont inherit RibbonForm

apply solution 1 from the documentation:
http://ribbon.codeplex.com/wikipage?title=Ribbon%20is%20slowing%20down%20application&referringTitle=Documentation

Hi, new version of Ribbon had released. Please visit the new development site of this project for latest fixes, info and downloads.
New site: https://officeribbon.codeplex.com/