On our web hoster "DomainFactory.de" there is an issue with file permissions in image_converter.php. After converting an image the file permissions are not set properly, that results in an inability to preview a image manipulation in ezie (see screenshot).

adding this at the end of function "perform" (after the "fileStore" call) solves the problem

        // fixing the file permissions
        eZImageHandler::changeFilePermissions( $dst );

Steps to reproduce

can only be reproduced on domainfactory hosts, but there could be problems with other hosters too maybe