We are having problems with implementing VAST tags from standard ad providers in the industry. Below is a sample of the error message we continue to get, despite trying many high-profile ad networks.
http://puu.sh/hL7hj/48c7a78977.png
I have a hard time believing that every major ad network we've tried doesn't know how to deliver VAST tags with the proper headers set. It leads me to believe it is something wrong with our setup perhaps?
Try these sample ad tags from Adotube and LiveRail on your test page. I would not expect you to get any CORS errors.
http://www.adotube.com/php/services/player/OMLService.php?avpid=oRYYzvQ&platform_version=vast20&ad_type=linear&groupbypass=1&HTTP_REFERER=http://www.longtailvideo.com&video_identifier=longtailvideo.com,test
http://ad4.liverail.com/?LR_PUBLISHER_ID=1331&LR_SCHEMA=vast2-vpaid
Liverail was one of the only providers we could get to work, actually. The other tag you've provided also seems to work fine. Try the example tags from this web site, however. They produce the same error we're getting with all of our providers (except for the Liverail tags).
http://www.iab.net/guidelines/508676/digitalvideo/vast/vast_xml_samples
Those IAB sample tags were published such a long time ago that I’m not surprised if some of them stopped working. Did you ever hear back from your ad network regarding the errors you’re seeing?
