Advertisements Hi folks, I've seen some posts about CL-14 and GSM-11 errors when trying to use Xfinity On-Demand, but not much in the way of solutions. My question may be more specific--I've already removed the app from my TiVo Premiere XL, restarted the box, and re-added the app, I've already had Comcast come out and check signal strength, and I've already replaced the CableCARD. None of these have worked. HOWEVER, when talking to Xfinity today, he asked if I was wired or wireless, and we sorta stumbled into the fact that I've got a third-party cable modem, and not one provided by Xfinity. So, two questions. First, are there known solutions to this problem that I'm just not finding? And second, are there modem/gateway specifications that have to be set a certain way for XOD on TiVo to work, and if so, what are they?