Error parsing the response to JSON

Hi I have the premium plugin installed, but despite trying everything i can think of the seo optimization tool fails to complete.. I have tried the Yoast test plugin – resetting link counter indexes and tables and migrations but sadly makes no difference. The latest json error message returned is:

<script>
var MP3jPLAYLISTS = [];
var MP3jPLAYERS = [];
</script>
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It’s quite random then when it fails.. it will start indexing fine but then fail at a random post/page. The response above would/might suggest a conflict with the media audio player, but i use the same plugin on other websites and that has zero problem.

I hope some help can be provided. Thanks.

The page I need help with: [log in to see the link]