Plus-Influence theme error 151

I am trying to customize the Influence-Plus theme to show the slider at the top of the screen. When I choose the option to ‘Use First Page Builder Row’, I get the below error when I update and reload my page.
Fatal error: Cannot unset string offsets in /home/bryqui7/2rollingstones.com/wp-content/plugins/plus-influence/slider.php on line 151
This is driving me nuts, any help would be appreciated.
Thanks,

Bryan

URL: http://www.2rollingstones.com