by Usman Asar.
Tonia, its Yosemite & MAMP issue, either install latest version of MAMP i.e 3.0.7.1 or shut down your MAMP servers,
go to Applications/MAMP/bin/apache2/bin/envvars and rename the file to _envvars
alternatively,
use FINDER and and find the file named envvars, rename this file to _envvars