dA Pasties

When ever I put a DeviantART pastie code in one of my plain text widgets my comment form disappears and the right side of my footer appears on top of the widget. Here is the code I am using:

<script type="text/javascript" src="https://backend.deviantart.com/pasties/js/?iam=awesty&amp;key=00104881af&amp;filter=mine&amp;stream=popular&amp;limit=5&amp;ori=v&amp;size=small"></script>

Can anyone think of a reason why this might be happening?

Thanks.