Coming Soon Page shows up blank

Hello,

Sorry, posted this in the wrong place first. I just downloaded your 'Coming Soon' plugin and when I activated it the homepage shows up blank now. I am still working locally if that makes a difference. Can you please help?

Thanks.

Regards,
Mike

Hi mjabate,
Thanks for contacting us and choosing our product!
About your problem with jux coming soon please give us more details about this bug. Maybe use debug tool of browser and screenshot. It will help us to find this bug. On localhost only function sendmail can't use
Hope this help!

Thanks for getting back to me. After switching errors on this is what it says:

Notice: Undefined variable: gantry in /Applications/MAMP/htdocs/realestate/templates/rt_ricochet/error.php on line 15

Fatal error: Call to a member function init() on a non-object in /Applications/MAMP/htdocs/realestate/templates/rt_ricochet/error.php on line 15

Let me know your thoughts on how to solve this. Also, since I activate the plugin, now my whole site isn't functioning anymore.