BuddyPress.org

At that point I really think this sounds like some kind of conflicting JavaScript issue. This cropper is solid because it’s the same library used by WordPress 2.9’s image cropping feature, and I think it’s even the same one that Gravatar uses ( which fits the roadmap ability of being able to import a gravatar via the BuddyPress interface. )

Check if any other plugins are adding conflicting JavaScript, and see if there are any errors occurring in your site.