Doctrine YAML not generating correctly? Or is this markup wrong?

Question

I'm trying to get a many-to-many relationship between Users and Settings. The models seem to be generated correctly, however the following query fails:

"User_Setting" with an alias of "us" in your query does not reference the parent component it is related to.

 $q = new Doctrine_RawSql();
 $q->select('{s.*}, {us.*}')
     ->from('User u 
             CROSS JOIN Setting s
             LEFT JOIN User_Setting us
             ON us.usr_auto_key = u.usr_auto_key 
             AND us.set_auto_key = s.set_auto_key')
     ->addComponent('s', 'Setting s INDEXBY s.set_auto_key')
     ->addComponent('us', 'User_Setting us')
     ->where(u.usr_auto_key = ?',$this->usr_auto_key);

 $this->settings = $q->execute();    

Does anyone spot a problem?

This is my YAML:

User:
  connection: default
  tableName: User
  columns:
    usr_auto_key:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: true
      autoincrement: true
      notnull: true
    email:
      type: string(100)
      fixed: false
      unsigned: false
      primary: false
      default: ''
      notnull: true
      autoincrement: false
    password:
      type: string(32)
      fixed: false
      unsigned: false
      primary: false
      default: ''
      notnull: true
      autoincrement: false
  relations:
    Setting:
      class: Setting
      foreignAlias: User
      refClass: User_Setting
      local: usr_auto_key
      foreign: set_auto_key
Setting:
  connection: default
  tableName: Setting
  columns:
    set_auto_key:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: true
      autoincrement: true
      notnull: true
    name:
      type: string(50)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
User_Setting:
  connection: default
  tableName: User_Setting
  columns:
    usr_auto_key:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: true
      autoincrement: false
      notnull: true
    set_auto_key:
      type: integer(4)
      fixed: false
      unsigned: false
      primary: true
      autoincrement: false
      notnull: true
    value:
      type: string(255)
      fixed: false
      unsigned: false
      primary: false
      notnull: true
      autoincrement: false
  relations:
    Setting:
      foreignAlias: User_Setting
      local: set_auto_key
      foreign: set_auto_key      
    User:
      foreignAlias: User_Setting
      local: usr_auto_key
      foreign: usr_auto_key