What version of mamp have you installed? Also which version of apache web server does it install? If you are using Apache 2.4 then add this piece of code in the Apache conf file (depends on installation, usually httpd.conf)
It’s MAMP 2.2 and according to this page, http://www.mamp.info/en/documentation/releases.html, it’s running Apache HTTP Server 2.2.25.
I’ve added those options into httpd.conf but it doesn’t seem to make a difference. Possibly I’ve just got the syntax wrong. It looks like this — is it correct?
# Each directory to which Apache has access can be configured with respect
# to which services and features are allowed and/or disabled in that
# directory (and its subdirectories).
# First, we configure the "default" to be a very restrictive set of
Options Indexes FollowSymLinks MultiViews
allow from all