"BuddyPress has it's own avatar system. The Avatars plugin functions have been deactivated

The plugin does not work (?) with my wpmu installation, I get this message:"BuddyPress has it's own avatar system. The Avatars plugin functions have been deactivated. Please remove the files." (Althoug I can see the default/standard icon for the blogs - when I do list them with the "Site Categories" plugin for example -, there are no options to choose from in the settings menue of WP! Thanks for checking!