(https://coppermine-gallery.com/forum/proxy.php?request=http%3A%2F%2Fwww.imagebanana.com%2Fimg%2Fzh195mmt%2Fthumb%2FUnbenannt1Kopie.jpg&hash=d7466ba578e74a2d59370b14f815b7c9052c2a0c) (http://www.imagebanana.com/view/zh195mmt/Unbenannt1Kopie.jpg)
As you can see in the picture I don't have the normal batch add files menu, but that weird something menu.
How can I get back to the usual menu?
You need to read and follow the rules for requesting help on this board.
Post a link to your Coppernine.
Do not hotlink images - attach them to your post.
No one will help you until then.
Link to the gallery as per screenshot is http://www.gabriella-source.com/
Not related to the modpack, moving accordingly.
As Joe suggested, do exactly as described in http://coppermine-gallery.net/demo/cpg14x/docs/index.htm#upload_support
Additionally, post a deep link to one of the files you're trying to batch-add that you have issues with.
The screenshot looks like you have replaced the code of searchnew.php (which is the batch-add file) with the code of search.php. Get a vanilla package and replace the file. Preferably, upgrade, as you're running behind in version count.