TypeError: templateInstance.collection.findOne is not a function( with FS collection )

[michelkeyaerts]

Hello,
I want to use Sortable on images with a FS collection. For now, drag and drop works only once and I have an error in the console: TypeError: templateInstance.collection.findOne is not a function ( rubaxa_sortable.js:1333:20)
How can I fix it?
I have a FS collection:

Images = new FS.Collection("images", {
  stores: [ 
    new FS.Store.FileSystem("images"),
    new FS.Store.FileSystem("thumbs", { transformWrite: createThumb }),
  ],
  filter: {
    allow: {
      contentTypes: ['image/*'] //allow only images in this FS.Collection
    }
  }
});

In sortable-collection.js (server side)

'use strict';
Sortable.collections = ['images'];
//I also tried  Sortable.collections = ['cfs.images.filerecord'];

In the template portfolio.html:

 {{#sortable items= imagesCursor sortField="metadata.order"}}  
             <img src="{{this.url  store='thumbs'}}" alt="caption for {{this.name}}" target="{{this}}" />
  {{/sortable}}

And in the portfolio.js helper imagesCursor function

      var result = Images.find({  'metadata.gallery':currentGallery});  // Images is an FS.Collection instance 
      return result;

[RubaXa]

Dear all! Meteor is moved to the separate repository. If this issue is still actual, please create it there once again.

For your info: this project needs a maintainer.