Link "See Codes" doesn't work if template has not specified different types

Here’s also a diff on that …

Index: wp-content/plugins/zanto/views/page-settings.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- wp-content/plugins/zanto/views/page-settings.php	(revision )
+++ wp-content/plugins/zanto/views/page-settings.php	(revision )
@@ -486,13 +486,21 @@
                                                                                     </thead>

                                                                                     <tbody>
+                                                                                        <?php if (!empty($zwt_ls_types)): ?>
-                                                                                        <?php foreach ($zwt_ls_types as $type => $description): ?>
-                                                                                            <tr>
-                                                                                                <td><?php echo $type ?></td>
-                                                                                                <td><?php echo $description ?></td>
-                                                                                                <td><code class="php"><?php do_action('zwt_lang_switcher', '<?php echo $type ?>'); ?></code></td>
-                                                                                            </tr>
-                                                                                        <?php endforeach; ?>
+                                                                                            <?php foreach ($zwt_ls_types as $type => $description): ?>
+                                                                                                <tr>
+                                                                                                    <td><?php echo $type ?></td>
+                                                                                                    <td><?php echo $description ?></td>
+                                                                                                    <td><code class="php"><?php do_action('zwt_lang_switcher', '<?php echo $type ?>'); ?></code></td>
+                                                                                                </tr>
+                                                                                            <?php endforeach; ?>
+                                                                                        <?php else: ?>
+                                                                                            <tr>
+                                                                                                <td><?php echo $type ?></td>
+                                                                                                <td><?php echo $description ?></td>
+                                                                                                <td><code class="php"><?php do_action('zwt_lang_switcher', ''); ?></code></td>
+                                                                                            </tr>
+                                                                                        <?php endif; ?>
                                                                                     </tbody>
                                                                                 </table>
                                                                             </div>
\ No newline at end of file

Please post the code of the custom template you created so I can help with this.
the problem seems to come from the way you uses “zwt_register_switcher_types” function.
That function takes an array as its parameter and returns an array.
So make sure you feed the function with an array.

Here’s the code for my language-switcher template:

<?php

function zwt_lang_switcher_fn()
{
    global $show_native_name, $show_translated_name;
    $languages = zwt_get_languages('skip_missing=0');

    if (!empty($languages)) :
        ?>
            <ul>
                <?php foreach ($languages as $lang): ?>
                    <li>
                        <?php $language = zwt_disp_language(
                            ($show_native_name) ? $lang['native_name'] : false,
                            ($show_translated_name) ? $lang['translated_name'] : false
                        ); ?>
                        <a class="lang_<?php echo $lang['language_code'] ?> <?php echo $lang['language_code'] ? "lang_enabled" : "lang_disabled" ?>" rel="alternate" hreflang="<?php echo $lang['language_code'] ?>"
                           href="<?php echo $lang['url'] ?>" title="<?php echo $language; ?>">
                            <?php echo $language; ?>
                        </a>
                    </li>
                <?php endforeach; ?>
            </ul>
    <?php
    endif;
}

add_action('zwt_lang_switcher', 'zwt_lang_switcher_fn');

Add the code below on top of your code. refresh the browser after saving the new template.

$ls_types = array('type_name'=>'This is your only custom switcher option description');
zwt_register_switcher_types($ls_types);

Know that … I would still like to have the code in there to make this step an optional step. Just needed if you want to support multiple themes.

That makes sense.
It will be included in the next release.
Thanks.