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Cannot access a disposed object.

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In SSMS, when selecting a Server Role Properties, I am getting this error:

=================================== Cannot access a disposed object. Object name: 'TaskFormDialogHost'. (System.Windows.Forms) ------------------------------ Program Location: at System.Windows.Forms.Control.CreateHandle() at System.Windows.Forms.Form.CreateHandle() at System.Windows.Forms.Control.get_Handle() at System.Windows.Forms.Control.SetVisibleCore(Boolean value) at System.Windows.Forms.Form.SetVisibleCore(Boolean value) at Microsoft.SqlServer.Management.TaskForms.TaskFormDialogHost.Microsoft.SqlServer.Management.TaskForms.ITaskFormManagerHost.Activate() at Microsoft.SqlServer.Management.ActionHandlers.DialogBasedActionHandler.PerformAction(String actionMoniker, IContext context)

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