Masterplan File Picker Issue

gistfile1.txt

{
  "created":"2016-02-10T05:54:18+00:00",
  "masterpress_version":"1.1.4.b1",
  "icons":[
    
  ],
  "shared_field_sets":[
    {
      "id":"13",
      "name":"page_banner",
      "singular_name":"page_banner",
      "disabled":"0",
      "position":"1",
      "allow_multiple":"0",
      "visibility":{
        "sites":"*",
        "templates":"*",
        "post_types":"*",
        "roles":"",
        "taxonomies":""
      },
      "icon":"",
      "labels":{
        "name":"Page Banner",
        "description":"",
        "description_user":"",
        "description_term":"",
        "singular_name":"Page Banner",
        "add":"Add Page Banner",
        "add_another":"Add Another Page Banner",
        "remove":"Remove Page Banner",
        "click_to_add":"Click to Add Page Banner",
        "one_item":"1 Page Banner",
        "n_items":"%d Page Banner",
        "no_items":"No Page Banner"
      },
      "expanded":"0",
      "sidebar":"0",
      "type":"s",
      "versions":"10",
      "capabilities":{
        "editable":"edit_posts",
        "visible":"edit_posts"
      },
      "fields":[
        {
          "id":"37",
          "field_set_id":"13",
          "name":"text",
          "labels":{
            "name":"Text",
            "description":"",
            "tooltip_help":""
          },
          "disabled":"0",
          "summary_options":{
            "width":""
          },
          "required":"0",
          "allow_multiple":"0",
          "visibility":{
            "sites":"*",
            "templates":"*",
            "post_types":"*",
            "roles":"*",
            "taxonomies":"*"
          },
          "icon":"",
          "type":"visual-editor",
          "type_options":{
            "default_tab":"visual",
            "height":"250",
            "html_editor":"cm",
            "cm_theme":"sunburst",
            "mce_blockformats":"",
            "mce_styles":""
          },
          "position":"1",
          "capabilities":{
            "editable":"",
            "visible":""
          }
        },
        {
          "id":"38",
          "field_set_id":"13",
          "name":"background",
          "labels":{
            "name":"Background",
            "description":"Background Image",
            "tooltip_help":""
          },
          "disabled":"0",
          "summary_options":{
            "width":""
          },
          "required":"0",
          "allow_multiple":"0",
          "visibility":{
            "sites":"*",
            "templates":"*",
            "post_types":"*",
            "roles":"*",
            "taxonomies":"*"
          },
          "icon":"",
          "type":"image",
          "type_options":{
            "filename_sanitize":"dashes",
            "filename_case":"lowercase",
            "allowed_maxsize":"250",
            "allowed_types":[
              "jpg",
              "jpeg",
              "png",
              "gif"
            ]
          },
          "position":"2",
          "capabilities":{
            "editable":"",
            "visible":""
          }
        },
        {
          "id":"65",
          "field_set_id":"13",
          "name":"background_video",
          "labels":{
            "name":"Background Video",
            "description":"",
            "tooltip_help":""
          },
          "disabled":"0",
          "summary_options":{
            "width":""
          },
          "required":"0",
          "allow_multiple":"0",
          "visibility":{
            "sites":"*",
            "templates":"*",
            "post_types":"*",
            "roles":"*",
            "taxonomies":"*"
          },
          "icon":"",
          "type":"file",
          "type_options":{
            "filename_sanitize":"dashes",
            "filename_case":"lowercase",
            "allowed_maxsize":"",
            "allowed_types":[
              "mp4",
              "m4v"
            ]
          },
          "position":"3",
          "capabilities":{
            "editable":"",
            "visible":""
          }
        },
        {
          "id":"39",
          "field_set_id":"13",
          "name":"disabled",
          "labels":{
            "name":"Disabled",
            "description":"",
            "tooltip_help":""
          },
          "disabled":"0",
          "summary_options":{
            "width":""
          },
          "required":"0",
          "allow_multiple":"0",
          "visibility":{
            "sites":"*",
            "templates":"*",
            "post_types":"*",
            "roles":"*",
            "taxonomies":"*"
          },
          "icon":"",
          "type":"checkbox",
          "type_options":{
            "value":""
          },
          "position":"4",
          "capabilities":{
            "editable":"",
            "visible":""
          }
        }
      ]
    }
  ],
  "field_types":[
    "visual-editor",
    "image",
    "file",
    "checkbox"
  ]
}