Just as a sanity check have you tried the default theme for BuddyPress? I understand if changing themes isn’t possible on your live site though.
It’s in the WP- bankend what difference should the template make?
I also have similar issues after upgrading to BP 1.6. Coincidentally I also use Salutation.
It is produced by some plugin. Disable all your plugins and this problem will disappea. Then switch the plugins on one by one and see which recreates the issue.
Thanks I did that again and it worked this time.