BuddyPress.org

I’ve seen this error before and cleared it up by removing the /uploads directory and recreating it. Set permissions to 755 (owner should be correct too). Next go to /wp-admin/options-media.php and make sure you leave this as default /wp-content/uploads (leave it blank)… tick the `Organize my uploads into month- and year-based folders` and save.

This fixed it for me. Hopefully it helps you too.