said by Suit Up:Theres some Tivo software conflict in the new Elite/XL4 that doesnt play nice with the cable card and tuning adapters here in the Dallas area. I dont know what it is, but I tried 3 different ones, and I've spoke to a lot of people from the Dallas area that had the same issue I did. Tivo of course tries to blame TWC, and TWC blames Tivo. Whats weird about the whole thing is that I can get 4 other 2 tuner Premiere Tivo's to work perfect on the same lines with no issues at all ever, but that 4 tuner one will just not work. Every few hours the Elite/XL4 will loose all channels and the only way to fix it is reboot the Tivo. Well I cant babysit a Tivo 24/7 to make sure everything records. So I finally just gave up on it and sold it on Ebay. Now with the 2 tuner Premieres, there are no issues at all. So I just assume its some software conflict going on. said by MeInDallas:
I got one of those Tivo Elite/XL4's and after 3 different ones finally figured out it wouldnt work with TWC. The tuning adapter/cable card setup was such a nightmare.
I've been running a CableCard+Tuning Adapter for almost a year now with no problems. Although I'm using a HDHomerun Prime and WMC not a Tivo. But I would expect a Tivo should work just as well. It always saddens me when people can't get it to work for them when it worked so well for me.