here is my controller action: def create UploadWorker.async_send_file(params[:image]) flash[:notice] = "uploading file" redirect_to root_url end class UploadWorker < Workling::Base def send_file(options) @image = current_user.images.build(params[:image]) @image.save end end I would like the paperclip upload, conversion and save to take place in the background. The error I get: can''t dump File /usr/lib/ruby/gems/1.8/gems/memcache-client-1.8.5/lib/memcache.rb:360:in `dump'' /usr/lib/ruby/gems/1.8/gems/memcache-client-1.8.5/lib/memcache.rb:360:in `set_without_newrelic_trace'' (eval):5:in `set'' (eval):4:in `set'' app/controllers/images_controller.rb:52:in `create'' {"commit"=>"upload", "authenticity_token"=>"3JniM+vyc29t+23lnQjm0RNjrzV37YswhK/fauMfEZY=", "image"=>{"photo"=>#<File:/tmp/RackMultipart20100814-12328-bwjqb8-0>, "location"=>"", "uid"=>"upload_workers:send_file:37ec9541ff9c36d5a7ac802822316d77", "description"=>"", "state_id"=>"1"}} -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.