After the Yosemite update yesterday, something is messed up with the Mcrypt extension. The PHP based artistan CLI of the Laravel framework returns:
M
The hotfix was applied this morning MAMP & MAMP PRO 3.0.7.2 Published: 2014-10-21. Default php 5.6.2
Don't forget to update .bash_profile
export PATH=/Applications/MAMP/bin/php/php5.6.2/bin:$PATH
Everything works fine on my local and it also works fine with drush (for those that use it)