Rails 3 Error Carrierwave-Fog-S3: Expected (200) <=> Actual (404 Not Found)

I use Carrerwave 0.5.3 and get a 404 error when I call Picture.save in the Create method of my image controller. Following the instructions in lib / carrierwave / storage / s3.rb I have the following initialization file (config / initializers / carrierwave_fog.rb):

CarrierWave.configure do |config|
     config.s3_access_key_id = "xxxxx"
     config.s3_secret_access_key = "xxxxx"
     config.s3_bucket = "mybucket"  #already created in my S3 account
end

In photo_uploader.rb, I have:

class PhotoUploader < CarrierWave::Uploader::Base
  include CarrierWave::RMagick
  storage :s3
  def store_dir
    "uploads"  # already created in my s3 account
  end
  def cache_dir
    "uploads/cache"  #already created in my s3 account
  end
end

Exact error:

Excon::Errors::NotFound in PicturesController#create
Expected(200) <=> Actual(404 Not Found)
  request => {:expects=>200}
  response => #<Excon::Response:0x00000104a72448 @body="", @headers={}, @status=404>

I found a somewhat similar question here Carrierwave and s3 with the heroku undefined error using the `fog_credentials = 'method . But in this case, apparently, worked on how I do it. Unfortunately, this is not for me.

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