BuddyPress 404 errors on Blogs, Members, Groups
I ran into a bit of an issue trying to get BuddyPress setup on my Mac (Tiger, if you must know) - clicking on Blog, Members or Groups would yield a 404.
To fix the problem you need to add the following (in addition to what is explained in the various readme files) directive to your httpd.conf:
<Directory "/path/to/apache/root">
Options FollowSymLinks
AllowOverride FileInfo Options
Allow from all
</Directory>
If you don’t have that in, it looks as if apache ignores the htaccess file in your Wordpress MU root.
Check out this forum thread for more: http://mu.wordpress.org/forums/topic/1187
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