Hi, What Eric meant was that you should only provide an Ad object ( http://code.google.com/apis/adwords/docs/reference/latest/AdGroupAdService.Ad.html) in the Ad field of the AdGroupAd object. If the Ad feed of the AdGroupAd is populated with a specific type of Ad (as it is when you retrieve it), the required portions of the ImagedAd are causing this issue. Try removing the non-Ad fields and changing the xsi:type to Ad.
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