AddThis validation failed: How do I apply this Fix?

[mcpisik]

Hi,
I was searching to fix a validation problem with my AddThis code.
Divavocals had suggested a fix on the AddThis site, as they hadn't bothered yet themselves.

I'd just like to know how to correctly apply it to my code.

THIS finally solved my validation issue.. remember to enclose the code they suggest inside script tags like this:
<script type="text/javascript">
document.write(unescape('YOUR ENCODED ADD THIS CODE GOES HERE'));
</script>

My own code is so far:

<!-- AddThis Button BEGIN -->
<div class="addthis_toolbox addthis_default_style ">
<a class="addthis_button_facebook_like" fb:like:layout="button_count"></a>
<a class="addthis_button_tweet"></a>
<a class="addthis_button_google_plusone" g:plusone:size="medium"></a>
<a class="addthis_button_pinterest_pinit"></a>
<a class="addthis_counter addthis_pill_style"></a>
</div>
<script type="text/javascript">var addthis_config = {"data_track_addressbar":true};</script>
<script type="text/javascript" src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-5123412341234"></script>
<!-- AddThis Button END -->

Any idea?

(The link talking about the fix had been archived, but here is the link to Divalvocals comment if it helps in future to anyone)
http://support.addthis.com/customer/...nate-solution-