Js error when removing plugins from FULL version CKEditor

[GLK]

Steps to reproduce

1. Standard includes to start everything off just fine.
2. Trying to remove some plugins for a simpler look.

   $(function() {
     var ckinstance = CKEDITOR.instances['message'];
   
     delete CKEDITOR.ckinstance;
     CKEDITOR.replace( 'message',  {
         customConfig: '/js/ckeditor_email_config.js'
     });
   });   
   

3. Followed with the email_config.js

CKEDITOR.editorConfig = function( config ) {

Define changes to default configuration here. For example:

config.removePlugins = 'image,language,gg,flash,base64image,pastbase64';

config.scayt_autoStartup = true;

};

Expected result

FULL toolbar minus some things I don't want users to see... This list is subtantially longer in reality, but error occurs with just these!

Actual result

TypeError: a is undefined

...CKEDITOR.env.isCompatible)return null;a=CKEDITOR.dom.element.get(a);if(a.getEdit...

ckeditor.js (line 322, col 76)

Other details (browser, OS, CKEditor version, installed plugins)

[GLK]

Sorry, forgot version info:
Tested CKEditor versions 4.5.1 and 4.5.3
Firefox 40.0.3
Chrome 44.0.2403.157 m