If images names contain spaces, in admin panel thumbnails and images in shutterbox are not displaying, and links to images are incorrect and return a 404.
The issue is related to esc_url function that remove spaces from urls.
This function is used in href, src and other tags, causing the issues mentioned above.
I’ve solved replacing code from old version (i copied from 1.7 admin/manage-images.php) in which esc_url function is not used
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