BuddyPress.org

I get this error:
Fatal error: Uncaught Error: [] operator not supported for strings in /***/**/**/**/chirri.dk/httpd.www/try/wp-content/plugins/buddypress/bp-activity/classes/class-bp-activity-component.php:281 Stack trace: #0 /***/**/**/**/chirri.dk/httpd.www/try/wp-includes/class-wp-hook.php(298): BP_Activity_Component->setup_admin_bar(”) #1 /***/**/**/**/chirri.dk/httpd.www/try/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters(NULL, Array) #2 /***/**/**/**/chirri.dk/httpd.www/try/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #3 /***/**/**/**/chirri.dk/httpd.www/try/wp-content/plugins/buddypress/bp-core/bp-core-dependency.php(143): do_action(‘bp_setup_admin_…’) #4 /***/**/**/**/chirri.dk/httpd.www/try/wp-includes/class-wp-hook.php(298): bp_setup_admin_bar(Object(WP_Admin_Bar)) #5 /***/**/**/**/chirri.dk/httpd.www/try/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters(NULL, Array) #6 /***/**/**/**/chirri.dk/httpd.www/try/wp-includes/plugin.php(515): WP_Hook->do_action(Array) #7 /custom in /***/**/**/**/chirri.dk/httpd.www/try/wp-content/plugins/buddypress/bp-activity/classes/class-bp-activity-component.php on line 281

Mod Edit: Server paths obscured – best not to reveal your server paths on a public forum.

I don’t know, I can’t see anything. The page is blank as you see on the screenshot. It’s on all pages…