Error Using ActiveX Control

I am having problems adding the activex com to a form. I am doing everything that is said in the instructions. I add the reference then drag the ZFshippingpanel Control. The error message that I get is this:

Failed to create component 'Axhost'. The error message follows:
'System.Badimageformatexception: A wrapper assembley is not registered for this library.
at System.Windows.Forms.Design.DocumentDesigner.AxItem.CreateComponentsCore(IDesignerHost host)
at System.Drawing.Design.ToolboxItem.CreateComponents(IdesignerHost host, IDictionary defaultValues)
at at System.Drawing.Design.ToolboxItem.CreateComponents(IDesigner Host host, IDictionary defaultValues)
at System.Windows.Forms.Design.OleDragDropHandler.CreateTool(ToolboxItem tool, Control parent, Int32 x, Int32 y, Int32 width, Int32 height, Boolean has Location, Boolean hasSize, ToolboxSnapDragDropEventArgs e)'

Please let me know how to fix this.

Thank you.