Can't change Gallery content.

I created a gallery page a few months ago but now I can't change the pictures in the gallery. There is no option to 'save all changes' only insert into post. I've uploaded my screenshot.

Thanks.

 

Hello,

Please follow the link given below
http://www.inkthemes.com/create-gallery-on-wordpress-with-no-image-repetition/03/

I hope it will help you.

Thanks & Regards
Gourav Shrivastava