Fatal error message when installing Genesis theme

I had the Holder theme on primary multisite.
I activated genesis them with intition of replacing Holder them. I got this message when I click activate.
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /home/websitename/public_html/wp-content/themes/genesis/lib/classes/breadcrumb.php on line 280

What does it mean and how do I fix? How do I prevent from happening again

Thanks