I've used MAMP before on my machine along with Drush. But I've never been able to use Drush on the sites that I'm using within Dev Desktop 2. I get a boostrap error:
% drush en auto_nodetitle
Command pm-enable needs a higher bootstrap level to run - you will need invoke drush from[error]
a more functional Drupal environment to run this command.
The drush command 'en auto_nodetitle' could not be executed. [error]
Drush was not able to start (bootstrap) the Drupal database. [error]
Hint: This error often occurs when Drush is trying to bootstrap a site that has not been
installed or does not have a configured database.
I heard that this might be due to Drush not using Dev Desktop's version of PHP (https://drupal.org/node/1465956). But any mention of Dev Desktop is referring to Dev Desktop 1. I am using 2.
This command gets me the status:
% /Applications/Acquia\ Dev\ Desktop/php5_3/bin/php /Applications/Acquia\ Dev\ Desktop/drush/drush.php status
But trying to enable the module gives me the bootstrap error again.
% /Applications/Acquia\ Dev\ Desktop/php5_3/bin/php /Applications/Acquia\ Dev\ Desktop/drush/drush.php en auto_nodetitle