Problem fixed.
The bug si about WPML and not ACF.
– Go to Media > Library
– Open any media item
– Scroll to the bottom of the page, select “Make Media translatable” option, and then click in the “Apply” button
– Now uncheck the “Make Media translatable” option and then click in the “Apply” button again.
The solution here:
http://wpml.org/forums/topic/images-disappear-from-media-library-upon-activation-of-media-translation/
For “media modal window” I mean the default modal-box that WordPress show when a user have to upload a image or a file in a post. The same that the Gallery Field show when I click the “upload image” blue button.
If I select a pre-existing image in Media the gallery works and display them right in the admin and in the front-end.
If i upload a new image, it is correctly uploaded and show in the gallery-field box BUT when I save the post or when i update the post… the last uploaded image disappear and the pre-existing images remain correctly in the gallery.
I see that the new image is correctly uploaded in the website, i can see it in the Media section.
The field have unique name, and it work for long time until now.
Other ACF for the same post-type works great.
The unique major change I made in the website is enable WPML.
Any ideas?
