Consider the following data fixture:

MyClass:
  some_row:  
    id: 10
    Translation:
      0:
        name: Phone cards

It will raise the error below. If the value 0 is changed to another number (I'm using an integer for the language indicator) it'll work fine.

  [sfException]

  Invalid row key specified: Array



  #0 C:colnectpluginssfDoctrinePLuginlibdoctrineDoctrineCli.php(88): Doct
rine_Cli->_run(Array)
  #1 C:colnectpluginssfDoctrinePLugindata	askssfPakeDoctrine.php(742): Doc
trine_Cli->run(Array)
  #2 C:colnectpluginssfDoctrinePLugindata	askssfPakeDoctrine.php(205): _ca
ll_doctrine_cli('load-data', Array)
  #3 C:colnectpluginssfDoctrinePLugindata	askssfPakeDoctrine.php(330): run
_doctrine_load_data(Object(pakeTask), Array)
  #4 [internal function]: run_doctrine_build_all_reload(Object(pakeTask), Array,
 Array)
  #5 C:wampinphpphp5.2.5PEARsymfonyvendorpakepakeTask.class.php(218):
call_user_func_array('run_doctrine_bu...', Array)
  #6 C:wampinphpphp5.2.5PEARsymfonyvendorpakepakeTask.class.php(181):
pakeTask->execute(Array, Array)
  #7 C:wampinphpphp5.2.5PEARsymfonyvendorpakepakeApp.class.php(175): p
akeTask->invoke(Array, Array)
  #8 C:wampinphpphp5.2.5PEARdatasymfonyinsymfony.php(174): pakeApp->r
un(NULL, NULL, false)
  #9 C:colnectsymfony(14): include('C:wampinphp...')

  #10 {main}