Can't link with NCover - System.ArgumentNullException:

I have recently downloaded and installed Typemock Isolator 5.2.1.0 and NCover 2.1.2.3433 (trial versions). In Typemock Isolator Configuration I am trying to Link NCover2.0 with Typemock but I get an unhandled exception:

System.ArgumentNullException:
Value cannot be null.
Parameter name: value
at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
at Microsoft.Win32.RegistryKey.SetValue(String name, Object value, RegistryValueKind valueKind)
at Microsoft.Win32.RegistryKey.SetValue(String name, Object value)
at Configuration.ConfigRegistry.b(RegistryKey A_0, String A_1, String A_2)
at Configuration.ConfigRegistry.SetProgramLocation64(String CLSID, String location)
at Configuration.ProfilersModel.a(Int32 A_0, Boolean A_1)
at Configuration.ProfilersModel.set_Enabled(Boolean value)
at TypeMock.Runner.ConfigurationForm.m(Object A_0, EventArgs A_1)
at System.Windows.Forms.CheckBox.OnCheckedChanged(EventArgs e)
at System.Windows.Forms.CheckBox.set_CheckState(CheckState value)
at System.Windows.Forms.CheckBox.OnClick(EventArgs e)
at System.Windows.Forms.CheckBox.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

I'm new to this, I'm I missing some configuration?

Don