       @renderDisabledTasking(plan)
 
   renderDisabledTasking: (plan) ->
-    <BS.Row key={plan.id} className="tasking-plan disabled">
+    <BS.Row key="tasking-disabled-#{plan.id}" className="tasking-plan disabled">
       <BS.Col sm=12>
         <input
           id={"period-toggle-#{plan.id}"}

      disabled={@state.isVisibleToStudents}
      checked={@state.showingPeriods}/> unless @state.isVisibleToStudents

    choiceLabel = <BS.Row>
      <BS.Col md=12>
        {radio}
        <label className="period" htmlFor='show-periods-radio'>

    maxOpensAt = TimeHelper.makeMoment(TaskPlanStore.getDueAt(@props.id), ISO_DATE_FORMAT).subtract(1, 'day')
    minDueAt = TimeHelper.makeMoment(TaskPlanStore.getMinDueAt(@props.id), ISO_DATE_FORMAT)

    opensAt = <BS.Col sm=4 md=3 key='common-open'>
      <TutorDateInput
        className='-assignment-open-date'
        ref="openDate"
