VPAID issue with JWPlayer 6

Question

I've tried unsuccessfully to integrate two separated VPAID test ad-tags.

The first one:

advertising: {
   "client": "vast",
   "tag": "http://search.spotxchange.com/vast/2.00/79391?VPAID=1&content_page_url=dzango.tv&cb=__random_number__&player_width=560&player_height=315&content_type=video"
}

The second one:

advertising: {
   "client": "vast",
   "tag": "http://app.scanscout.com/ssframework/get.xml?a=0&format=vast2.0&acceptVpaid=Y&vpaidType=direct&type=preroll&orgId=1&partnerId=61988&videoId=[VIDEO_ID]&videoTitle=[VIDEO_TITLE]&videoDesc=[VIDEO_DESCRIPTION]&videoPageUrl=[PAGE_URL]&videoUrl=dzango.tv&videoWidth=560&videoHeight=315&maxAdDuration=30&cacheBuster=__random-number__"
}

Can anyone help me please? I've tried the ad-tags on other pages/players (e.g. Google's Video Suite Inspector) successfully.

Thanks in advance,
Daniel