Hello I've just updated Drupal (to version 7.53) and now in Drush when I try launch the commands: "drush @theflyingeye.org up" (to update my website) or "drush @theflyingeye.org cc" (to clean chache) or "drush @theflyingeye.org dl view" (to download a basic module, view for example) I can just get this answer: "Unknown engine type outputformat"

If I digit:

"drush status" (after "su aegir")
I can get: 
"PHP configuration     :  /etc/php5/cli/php.ini                                 
 Drush version         :  5.10.0                                                
 Drush configuration   :  /var/aegir/.drush/drushrc.php                         
 Drush alias files     :  /var/aegir/.drush/server_master.alias.drushrc.php     

Do you have any advise please to fix this problem?

  • Try clearing the drush cache. drush cc drush Commented Jan 25, 2017 at 12:49
  • Also upgrading to Drush 8 could help ... see drush.org/en/master/install Commented Jan 25, 2017 at 14:02
  • 1
    Drush 5.10 is ancient so you should really, really upgrade. What does drush --debug version report? The "Unknown engine type outputformat" error indicates that you have another Drush around ...
    – hansfn
    Commented Jan 25, 2017 at 17:44
  • Sort of looks like you have a contrib module that has a Drush extension that is using a feature not available in Drush 5.10. Try upgrading as suggested by others. Commented Jan 26, 2017 at 0:41
  • Hansfn, if I "drush --debug version" i get: Bootstrap to phase 0. [0 sec, 3.81 MB] Drush bootstrap phase : _drush_bootstrap_drush() [0 sec, 4.03 MB] Loading drushrc "/var/aegir/.drush/drushrc.php" into "home.drush" [bootstrap] scope. [0.02 sec, 4.04 MB] Cache HIT cid: 5.10.0-commandfiles-0-5ddf65b044b60bcd12160894847f471e [debug] [0.06 sec, 4.06 MB] Loading apache driver for the http service [0.27 sec, 10.77 MB] [notice] drush version 5.10.0 *** and some details ***
    – Gilles9999
    Commented Feb 8, 2017 at 10:04

1 Answer 1


Start with upgrading to Drush 8 ... see http://drush.org/en/master/install

  • Thank you. I would like to specify the original installation is with AEGIR. Do you know if there is any special trick to update Drush through Aegir ?
    – Gilles9999
    Commented Feb 8, 2017 at 10:06
  • The 'manual' upgrade script does it like this pretty much like the Drush docs suggest it. Commented Feb 8, 2017 at 13:48

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