```ruby
class Spree::UserRegistrationsController < Devise::RegistrationsController
  helper 'spree/base', 'spree/store'

  if Spree::Auth::Engine.dash_available?
    helper 'spree/analytics'
  end

  include Spree::Core::ControllerHelpers::Auth
  include Spree::Core::ControllerHelpers::Common
  include Spree::Core::ControllerHelpers::Order
  include Spree::Core::ControllerHelpers::Store

  before_filter :check_permissions, :only => [:edit, :update]
  skip_before_filter :require_no_authentication

  def create
    build_resource(spree_user_params)
    if resource.save
      set_flash_message(:notice, :signed_up)
      sign_in(:spree_user, resource)
      session[:spree_user_signup] = true
      associate_user
      respond_with resource, location: after_sign_up_path_for(resource)
    else
      clean_up_passwords(resource)
      respond_with(resource) do |format|
        format.html { render :new }
      end
    end
  end

  protected
  def translation_scope
    'devise.user_registrations'
  end

  def check_permissions
    authorize!(:create, resource)
  end

  private
  def spree_user_params
    params.require(:spree_user).permit(Spree::PermittedAttributes.user_attributes | [:email])
  end
end
```

Remove superfluous call to associate_user
user
```ruby
class Spree::UserRegistrationsController < Devise::RegistrationsController
  helper 'spree/base', 'spree/store'

  if Spree::Auth::Engine.dash_available?
    helper 'spree/analytics'
  end

  include Spree::Core::ControllerHelpers::Auth
  include Spree::Core::ControllerHelpers::Common
  include Spree::Core::ControllerHelpers::Order
  include Spree::Core::ControllerHelpers::Store

  before_filter :check_permissions, :only => [:edit, :update]
  skip_before_filter :require_no_authentication

  def create
    build_resource(spree_user_params)
    if resource.save
      set_flash_message(:notice, :signed_up)
      sign_in(:spree_user, resource)
      session[:spree_user_signup] = true
      respond_with resource, location: after_sign_up_path_for(resource)
    else
      clean_up_passwords(resource)
      respond_with(resource) do |format|
        format.html { render :new }
      end
    end
  end

  protected
  def translation_scope
    'devise.user_registrations'
  end

  def check_permissions
    authorize!(:create, resource)
  end

  private
  def spree_user_params
    params.require(:spree_user).permit(Spree::PermittedAttributes.user_attributes | [:email])
  end
end
```
assistant