select2: Select2 ajax init does nothing.

I’m having an issue with the select2 (4.0.3) ajax call for the “type ahead” function. I originally had this as an input then changed it to a select to support the 4.0 requirement. I’ve confirmed its hitting the initialize for Select2. I’ve also confirmed that the url passed is good. Everything I have should be working based on the documentation. What am I missing? I appreciate a second set of eyes. Thanks for your help.

HTML

<select 
  id="medList2" 
  placeholder="Drug" 
  class="select2" 
  style="width: 200px;" 
  data-sequence="80" 
  data-parent-id="4" 
  data-id="80" 
  data-label="Drugs" 
  data-bind-0="4-80"></select>

Javascript

$('#medList2').select2({     
        ajax: {              
            url: '/path/todata/',
            dataType: 'json',
            delay: 250,
            type: "POST",
            // id: getUnid(),
           // contentType: "application/json",
            data: function (term) {                   
                return {
                    Prefix: term
                };
            },
            processResults: function (data) {                  
                return {
                    results: $.map(data, function (item) {
                        return {
                            text: item.Text,
                            id: item.ID

                        }
                    })
                };
            },
            cache: true
        },
        placeholder: 'Choose Meds',
        minimumInputLength: 2           

    });