BuddyPress.org

not sure when and how they will manage to find a solution for everyone. there are tons of post about this issue. have a look at this other one as well:

https://buddypress.org/community/groups/how-to-and-troubleshooting/forum/topic/avatar-cropping-after-upload-image-and-cropper-dont-appear-fails/#post-43770

although my original solution worked with one host (IX webhosting), i tried the exact same procedure on another one (hostgator) and it didn’t work. i the latter it is not url problem it is something else as the imges appear fine, but the crop is failing.