If you auto-upgraded from backend, download a fresh copy of BuddyPress and upload manually to your plugins folder.
i just installed that latest version on the first go…. never upgraded, no need to…
do i still need to re-upload the buddypress fresh download ?
Troubleshooting at this time. The more information you can give about your WP installation, the better – server. PHP version, etc. If you have any other plugins aside from BuddyPress activated, deactivate them and change to bp-default theme. If you still see the error, download a fresh copy of BP and re-upload to server via FTP/cpanel.