BuddyPress.org

I found the answer posted by Dennis:

After looking for a solution after a few days I found out, that the upload path handling of WordPress (see “Settings” >> “Miscellaneous”) causes this issue. My fix:

Clear “Store uploads in this folder”-path

Set “Full URL path to files” to absolute server path , e.g. “/home/_several_/_folder_/_levels_/wp-content/uploads”

Ed