CKEditor Plugin giving errors 'Uncaught TypeError: Cannot read property 'icons' of null'
<p>I am just starting with CKEditor (latest version 4.5.7) using the cdn, wanting to use the plugin:</p>

<pre><code>http://ckeditor.com/addon/uploadimage
</code></pre>

<p>I have downloaded and extracted the files of that plugin to 'myplugins/uploadImage/'.</p>

<pre><code>                &lt;textarea name="editor1"&gt;&lt;/textarea&gt;
                &lt;script&gt;
                    CKEDITOR.plugins.addExternal( 'uploadImage', '/myplugins/uploadImage/', 'plugin.js' );
                    CKEDITOR.replace( 'editor1', {
                         extraPlugins: 'uploadImage'
                    } );                        
                &lt;/script&gt;               
</code></pre>

<p>CKEditor works without any plugins, but when I do the above to add the 'uploadImage' plugin, I am getting the following error in chrome console:</p>

<p>'Uncaught TypeError: Cannot read property 'icons' of null'</p>

<p>What is it that I am missing?</p>