I am having a problem with XamContextMenu. I've just started to look at it but at the moment I cannot get it to work at all.

I am using the most basic example straight from the documentation:

        <TextBox Height="23" HorizontalAlignment="Left" Margin="68,30,0,0" Name="textBox1" VerticalAlignment="Top" Width="120">

            <ig:ContextMenuService.Manager>

                <!--If you use the Infragistics Commanding Framework, you should set the OpenMode property to None-->

                <ig:ContextMenuManager ModifierKeys="Shift" OpenMode="RightClick">

                    <ig:ContextMenuManager.ContextMenu>

                        <ig:XamContextMenu Name="contextMenu2">

                            <ig:XamMenuItem Header="Font" />

                            <ig:XamMenuItem Header="Formatting" />

                        </ig:XamContextMenu>

                    </ig:ContextMenuManager.ContextMenu>

                </ig:ContextMenuManager>

            </ig:ContextMenuService.Manager>

        </TextBox>

When I run this and try to invoke the context menu (Shift + Right mouse click), I get a run-time exception:

Unable to cast object of type 'Infragistics.Controls.Menus.XamContextMenu' to type 'Infragistics.Controls.Menus.XamMenu'.

I am using InfragisticsWPF4.v10.3 library. I have tried it for different controls - no luck, the same exception.

What is wrong here?