           dfd.fail(options.error)
           dfd
 
-        BaseHullModel = Backbone.Model.extend
+        BaseHullModel = app.core.mvc.Model.extend
           sync: sync
 
         RawModel = BaseHullModel.extend

        sandbox = app.sandbox

        _         = require('underscore')
        Backbone  = app.core.mvc
        easyXDM   = require('easyXDM')

        slice = Array.prototype.slice

              url = @collection?.url
            url

        Collection = app.core.mvc.Collection.extend
          model: Model
          sync: sync

