I’m going to investigate this, and let you know. In the interim, try setting BP_ROOT_BLOG in wp-config.php to the ID of your subsite — see https://codex.buddypress.org/extending-buddypress/changing-internal-configuration-settings — and then re-enable the plugin that subsite (not network activate).
THANK YOU! After setting the BP_ROOT_BLOG in wp-config.php to the ID of the subsite, BP was “successfully activated.” Except that when I try to run the installation wizard it tells me I “do not have sufficient permissions to access the page.” I am listed as admin for the subsite … There may be a larger issue with WP install or conflict with a plugin?
I’m facing the same issue.
Have you solved it ?
I am just learning MultiSite WordPress myself. So far I’ve learned that if I want to edit Templates or Plugins pages for another site, I first have to activate the Theme I want to make changes to as my first level site, the Admin Site, or Edit the Plugin via the Admin site. Then, I go under the Main/Admin Site and edit the Templates or Plugin. After I have everything looking good, then I activate the Theme or Plugin for the actual site where I want to use the Template or Plugin. One must use this method (based on my learning) if one wants to use an external Editor, such as Dreamweaver.
I did notice that the access to the Activity, Sites, Forums, et al only show up in WordPress’s Tool Bar (the dark gray bar at the top of the page) under my Profile Link on the far right, when I am Logged In. I think this part is not clear in the directions, imo. After the initial install of BuddyPress MultiSite, I was able to see a couple of the BuddyPress pages links in the Main Menu of my top Site only after I am logged in.
Since I know I want to edit my Theme for one of the Sites, I have not enabled the separate tables for the additional site. I am going to edit the Theme first and then enable the other sites using the method described at this page: https://codex.buddypress.org/developer-docs/using-multisite-with-buddypress/segregated-x-profile-fields-for-multisite/ .