We just picked up a couple of DMP 4310s. Most of our DMPs are 4400. I ran our regular content through the new DMPs and found that they don't play any from of HTML. I used a remote URL, as I do for the 4400s, then I uploaded an html file to see if there was any difference, but all I get in both cases is a blank area. Note, the content is played using the presentation template, and the zone is set up to rotate HTML driven content.
Does anyone have any suggestions on how to play HTML or is this just a "feature" of the 4310?