my wordpress crashes when i upload the support faq plugin

When I upload the support plugin my site crashes and get the following error:

Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /home/content/54/5280754/html/agpts/wp-content/plugins/incsub-support/inc/classes/class-shortcodes.php on line 69

The only way to get my site running again is to delete the /wp-content/plugins/incsub-support file using ftp
I'm using single website mode whats going on??