Let me precise my message: If I install the 2.8. version and above, the install will be done, and the main site will run, but not the subsites with Error 500.
This is also the case with only buddypress activated in my wordpress, which shows it is a problem of Buddypress plugin.
Best,
I tried it and returned
Parse error: syntax error, unexpected ‘=’ in /home/…/public_html/wp-content/plugins/bp-custom.php on line 60, which is the line $included_users = implode(‘,’,get_users(‘blog_id=’.$sitio_id.’&fields=ID’));