BuddyPress.org

@jillsays – Here’s what you need to do:

In your bbPress theme’s folder (/bb-templates/kakumei-blue), create a functions.php file and add the following:
http://pastebin.com/PDeF3kjm (updated)

You can adjust the default avatar in bbPress by going to the bbPress admin panel (/forum/bb-admin/) and clicking on “Settings > Discussion”.

I’ve tried to “guess” where the BP avatar path is, however if this doesn’t work, you’ll have to adjust the $avatar_folder_dir variable manually (this will definitely apply to WPMU users).

Give it a shot and report back.