Can't get Wyvern to show YouTube button

Question

I want to add the YouTube button to Wyvern fields. I enabled it in Wyvern's config.php:

    'Styles' => 'no',
    'Syntaxhighlight' => 'no',
    'YouTube' => 'yes',

etc...

placed the YouTube plugin in the correct folder http://ckeditor.com/addon/youtube

and added

config.extraPlugins = 'youtube';

to CKEditor's config.js.

The button shows up in Wyvern's config screen in EE, but does not show up in the Wyvern fields.

Answer 1

Stop the presses,

I don't see in your question if you followed the documented process over at bold minded here : https://boldminded.com/add-ons/wyvern/documentation (all my quotes below are from this site)

So Step one (which I assume you've done as you can see it in the field list) :

Adding 3rd Party Plugins (after version 1.2.7)

Place your CKEditor plugin inside the /themes/third_party/wyvern/plugins/ folder. In the ExpressionEngine control panel go to Add-ons » Fieldtypes » Wyvern and select your plugin in the multi-select menu to enable it.

Now, Step 2 all you need to do is add it to the toolbar :

Adding buttons to the toolbar

By default, Wyvern intentionally comes with a limited set of CKEditor buttons in the Fieldtype settings page. I have chosen to keep the default list to the essentials for simplicity. If a button you need is not found in the Toolbar list, open the system/expressionengine/third_party/wyvern/config.php file. You will see an array which defines the default list, as well as the rest of the available CKEditor buttons, which are commented out. To enable a button, simply remove the code comment prior to that button. Go back to the Add-ons > Fieldtypes > Wyvern page and the button will be available within the Toolbar list.

Note This is not CKEditors "config.js" but Wyverns "config.php".

I'm not sure from your question if you have seen this page or anything, but can you try this process and let us know how you get on! I would recommend rolling your changes back and trying this first...