System.Exception: This Form uses a Janus WinForms Control v4 that was not properly installed in this

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Microsoft Visual Studio
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Failed to create component 'UIButton'. The error message follows:

'System.Exception: This Form uses a Janus WinForms Control v4 that was not properly installed in this machine.
The Form Designer was prevented from being shown in order to avoid a possible corruption of the Form Settings.
Please install the Janus WinForms Controls using the Controls Setup in order to edit this Form.

at Janus.Windows.UI.Design.DesignHelper.a()

at Janus.Windows.EditControls.UIButton.set_Site(ISite value)

at System.ComponentModel.Container.Add(IComponent component, String name)

at System.ComponentModel.Design.DesignerHost.PerformA dd(IComponent component, String name)

at System.ComponentModel.Design.DesignerHost.System.C omponentModel.Design.IDesignerHost.CreateComponent (Type componentType, String name)

at System.ComponentModel.Design.DesignerHost.System.C omponentModel.Design.IDesignerHost.CreateComponent (Type componentType)

at System.Drawing.Design.ToolboxItem.CreateComponents Core(IDesignerHost host)

at System.Drawing.Design.ToolboxItem.CreateComponents Core(IDes...'
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OK
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