JavaScript error - Full Version v.s. Standard Version

I was using the standard download and the editor was working.  I am using MVC 4 and it worked both in IE 10 and Chrome.  Then I downloaded the full version to get some of the advanced functionality and now I get a JavaScript error in IE.  I tried compatability mode, etc. but nothing makes a difference.

Here's the error I get:

Unhandled exception at line 504, column 84 in http://localhost:26053/ckeditor/ckeditor.js

0x800a138f - JavaScript runtime error: Unable to get property 'ltr' of undefined or null reference

Am I doing something wrong?  Is the init code for the full version different?

Currently I have the following for the text block:

@Html.TextAreaFor(m => m.Content, new { @class="ckeditor", @id="upcomingEventsContent"})

And in a script tag:

$(function() {

CKEDITOR.replace('upcomingEventsContent');

});

Thanks.