Heroku, S3, Paperclip one model loads fine, the other does not cause errors

Ok, so I have 2 models with downloads, auction and user.

I use Paperclip, Rails 3.2 and Ruby 1.9.3. Platform - Heroku Cedar.

Here is the credential data:

S3_BUCKET = ENV['S3_BUCKET'] || "..."
S3_ID = ENV['S3_ID'] || "AKIAJXD4ZBGYF24..."
S3_KEY = ENV['S3_KEY'] || "fJ7eNKQtFGf1s..."
S3_UPLOAD_OPTIONS = {
  storage: :s3,
  bucket: S3_BUCKET,
  s3_credentials: {
    access_key_id: S3_ID,
    secret_access_key: S3_KEY
  }
}

Uploading auction files works fine. Everything is expected.

Custom downloads do not work and have zero errors, as shown below:

2012-05-17T20:39:16+00:00 app[web.1]: 
2012-05-17T20:39:16+00:00 app[web.1]: DalliError: No server available
2012-05-17T20:39:16+00:00 app[web.1]: 
2012-05-17T20:39:16+00:00 app[web.1]: 
2012-05-17T20:39:16+00:00 app[web.1]: Started PUT "/users" for 208.117.193.99 at 2012-05-17 20:39:16 +0000
2012-05-17T20:39:18+00:00 heroku[router]: POST cfac-staging.herokuapp.com/users dyno=web.1 queue=0 wait=0ms service=2006ms status=302 bytes=113
2012-05-17T20:39:18+00:00 app[web.1]: cache: [POST /users] invalidate, pass
2012-05-17T20:39:18+00:00 app[web.1]: 
2012-05-17T20:39:18+00:00 app[web.1]: DalliError: No server available
2012-05-17T20:39:18+00:00 app[web.1]: 
2012-05-17T20:39:18+00:00 app[web.1]: 
2012-05-17T20:39:18+00:00 app[web.1]: Started GET "/auctions/new" for 208.117.193.99 at 2012-05-17 20:39:18 +0000
2012-05-17T20:39:19+00:00 heroku[router]: GET cfac-staging.herokuapp.com/auctions/new dyno=web.1 queue=0 wait=0ms service=1154ms status=304 bytes=0
2012-05-17T20:39:19+00:00 app[web.1]: cache: [GET /auctions/new] miss
2012-05-17T20:39:19+00:00 app[web.1]: DalliError: No server available
2012-05-17T20:39:19+00:00 app[web.1]: cache: [GET /assets/blank-avatar-9a23306b75ac790741fc7e05300183b6.png] miss
2012-05-17T20:39:19+00:00 heroku[router]: GET cfac-staging.herokuapp.com/assets/blank-avatar-9a23306b75ac790741fc7e05300183b6.png dyno=web.1 queue=0 wait=0ms service=3ms status=200 bytes=2212
2012-05-17T20:39:19+00:00 app[web.1]: DalliError: No server available
2012-05-17T20:39:19+00:00 app[web.1]: cache: [GET /assets/get-started-button-f7e9baac88feb2effa461b697df8bcd9.png] miss
2012-05-17T20:39:19+00:00 heroku[router]: GET cfac-staging.herokuapp.com/assets/get-started-button-f7e9baac88feb2effa461b697df8bcd9.png dyno=web.1 queue=0 wait=0ms service=3ms status=200 bytes=2451

I have no idea why the DalliError bit also occurs, so ...

Here are the user models and auctions:

class User < ActiveRecord::Base
  has_attached_file :logo, { styles: { medium: "x125", thumb: "x40" } }.merge!(S3_UPLOAD_OPTIONS)
end

class Auction < ActiveRecord::Base
  has_attached_file :image,  { styles: { medium: "122x122#", thumb: "80x80#" }, default_url: ActionController::Base.helpers.image_path('blank-avatar.png') }.merge!(S3_UPLOAD_OPTIONS)
end