RSS feed not validating

[JoustComics]

Suddenly my RSS feed is not validating from line 1. Says "xml declaration not at start of external entity"

This is the same case for Podcast Addict on android, iTunes, http://podba.se/ and http://castfeedvalidator.com/

My feed is as follows:
http://videodestruct.com/category/vd-podcast/feed/

I've seen some documentation about not having any blank spaces but I'm not seeing a blanks space on line 1.
Any help?

[Shawn Thorpe]

Something is possibly injecting bad code into the feed. It could be either your WordPress theme or another plugin. Ensure you're running the latest versions of both WordPress and PowerPress. If you are, and the problem persists, this page has some suggestions on how you can diagnose the problem:
http://create.blubrry.com/resources/powerpress/using-powerpress/diagnosing-feed-andor-player-issues-with-powerpress/

[JoustComics]

It's interesting because the plugin that is making the feed not valid is the Blubrry PowerPress plugin. When I deactivate it the feed validates and even updates on iTunes and Podcast Addict. But when it's activated it breaks and it will not update on the feeds.

The difference in line one is the google play and rawvoiceRssModule calls

Plugin Activated:
<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
   xmlns:content="http://purl.org/rss/1.0/modules/content/"
   xmlns:wfw="http://wellformedweb.org/CommentAPI/"
   xmlns:dc="http://purl.org/dc/elements/1.1/"
   xmlns:atom="http://www.w3.org/2005/Atom"
   xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
   xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
   xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd"
xmlns:rawvoice="http://www.rawvoice.com/rawvoiceRssModule/"
xmlns:googleplay="http://www.google.com/schemas/play-podcasts/1.0"
>

Not activated:
<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
   xmlns:content="http://purl.org/rss/1.0/modules/content/"
   xmlns:wfw="http://wellformedweb.org/CommentAPI/"
   xmlns:dc="http://purl.org/dc/elements/1.1/"
   xmlns:atom="http://www.w3.org/2005/Atom"
   xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
   xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
   >

Any idea why this would be breaking when the very plugin to ensure the feed can submit is activated?

PS. It's not the theme either. I have tried basic Twenty Twelve - Twenty-fourteen themes and they all leave the feed invalid.

[Shawn Thorpe]

Are you running more than one podcasting plugin? If so, disable the non-PowerPress podcasting plugin.

[JoustComics]

No I am not.