Unfortunately, BP-Groupblog plugin does not seem to work at all with the latest WMPU and BP. It blows up on the step 3 to 'Create a Blog', so I cannot test it any further. It does actually create a blog but the process is interrupted incomplete by ...
Warning: Invalid argument supplied for foreach() in/public_html/wp-content/plugins/bp-groupblog/bp-groupblog-admin.php on line 37
Warning: Cannot modify header information - headers already sent by (output started at /public_html/wp-content/plugins/bp-groupblog/bp-groupblog-admin.php:37) in/public_html/wp-content/plugins/buddypress/bp-groups.php on line 507
Warning: Cannot modify header information - headers already sent by (output started at /public_html/wp-content/plugins/bp-groupblog/bp-groupblog-admin.php:37) in /public_html/wp-content/plugins/buddypress/bp-groups.php on line 508
Warning: Cannot modify header information - headers already sent by (output started at /public_html/wp-content/plugins/bp-groupblog/bp-groupblog-admin.php:37) in /public_html/wp-includes/pluggable.php on line 865
Is this a WPMU issue pluggable.php or a plugin issue?