Sorry, I looked first, but didn't see a fix. When I try to install Gantry 5, I receive this error:
PHP 5.3.29 is not supported. Minimum required version is PHP 5.4.0, but it is highly recommended to use PHP 5.5.9 or later version.
Error installing package
I have Joomla 3.4.1 and my other extensions are all up to date. Not sure what other information you need, but I can provide back end access if that would help.