Plugin Not Activated

Hello,

When I trying to activate the plugin after install it shows the blank page and stops all the wordpress site. Please have a look towards this problem.

My theme is http://demo.teothemes.com/?theme=scrn
purchased from themeforest.

My wordpress installation is: http://theroboticshomepage.com/startupsaturday/

Thank You

http://wordpress.org/plugins/aqua-page-builder/