Avatars Plugin Not Installing Properly

Hi there ~

I recently installed the Avatars 3.4 plugin but we're getting the following error message under "Users / Avatar settings:

Warning: Missing argument 5 for bp_core_fetch_avatar_filter() in /home/webcon/public_html/wp-content/plugins/buddypress/bp-core/bp-core-avatars.php on line 345

The website we're running plugin tests on is http://webcontenteditor.net/.
- WPMU version : 2.9.2
- BuddyPress version: Version 1.2.1
- Theme version: BuddyPress Scholar Child 1.0.6

Thank you in advance for your help!