updated site and now broken

I updated all using the main control panel in WPMU (not the local wp-admin control panel) and now I get this:

Warning: ksort() expects parameter 1 to be array, object given in /home/content/p3pnexwpnas03_data03/61/2982361/html/wp-content/plugins/bbpress/includes/core/template-functions.php on line 316

Warning: Cannot modify header information - headers already sent by (output started at /home/content/p3pnexwpnas03_data03/61/2982361/html/wp-content/plugins/bbpress/includes/core/template-functions.php:316) in /home/content/p3pnexwpnas03_data03/61/2982361/html/wp-includes/pluggable.php on line 1179

I have no idea how to fix this. Can you help? I was not able to get into the dashboard so I am not able to install the support plugin or to grant you access. I'm hoping you will be able to point me in the right direction.

Thank you,

Cassie