grlfsk

That fixed it, thank you!

I’ve received the following fix from the official nf support:

it appears that you are still using the deprecated, 2.9.x codebase. You can upgrade to the 3 codebase by following this documentation. https://ninjaforms.com/docs/conversion/

Maybe that helps for you as well?

I have the same issue.

WordPress-Version 5.4.2
Plugin: Ninja Forms (Version 3.4.24.3)
PHP-Version 7.3.6

Fehler-Details
==============
Ein Fehler vom Typ E_ERROR wurde in der Zeile 324 der Datei /.../wphome/wp-content/plugins/ninja-forms/deprecated/classes/notifications.php verursacht.
Fehlermeldung: Uncaught Error: Call to a member function save_admin() on null in /.../wphome/wp-content/plugins/ninja-forms/deprecated/classes/notifications.php:324
Stack trace:
#0 /.../wphome/wp-content/plugins/ninja-forms/deprecated/includes/admin/save.php(109): NF_Notifications->save_admin(2, Array)
#1 /.../wphome/wp-includes/class-wp-hook.php(287): ninja_forms_admin_save('')
#2 /.../wphome/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(false, Array)
#3 /.../wphome/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#4 /.../wphome/wp-admin/admin.php(170): do_action('admin_init')
#5 {main}
  thrown

Same problem on my site, can be checked here:
https://www.camping-traisen.at/en/galerie/special-fotos/

Hello Dan,

In the meanwhile I found a solution.
I added the following code to my main themes functions.php:

function register_my_menu() {
  register_nav_menu('header-menu',__( 'Header Menu' ));
}
add_action( 'init', 'register_my_menu' );

This works because my mobile theme uses this header-menu and my main theme doesn’t. Now I can set the mobile menu in my main theme, because d/t this code it is added there to the menu positions settings and passed on to the mobile theme during switching. Hope it’s clear and it helps somebody else.

I think I have the same problem.

I’m using a customized twenty eleven child theme and a child theme of the responsive theme. I’m using the same main menu for both of them which works fine if the themes are activated manually.

However when the mobile theme is switched through mobile smart the main menu does not appear as configured – instead it’s just a list of all published pages in alphabetical order.

I’m pretty sure this worked before, but unfortunately I didn’t notice which individual update broke it.

Any news on that?

Not really, sorry.
After all I decided to go for another variant with the FancyBox for WordPress plugin for the default WordPress gallery.

I have a similar issue.

No error message, but on the translated page (with an additional /en/ in the URL path) only the first image/thumbnail is displayed instead of the whole gallery.

I use the latest version of WP (3.9.1), Stella (1.4) and NextGEN (2.0.66)

Can this be fixed somehow?