Update archive_files_controller.rb

try

app/controllers/admin/archive_files_controller.rb

@@ -51,7 +51,7 @@ class Admin::ArchiveFilesController < OrbitAdminController
   end
   def categories_order
     @categories = @module_app.categories
-    render :partial => "categories_order"
+    render :partial => "categories_order"  if request.xhr?
   end
   def create
     @archive_file = ArchiveFile.new(archive_vars)