I tried all methods available within Media Center Guide and suggestions from online forums to download new EPG but it always defaults to Zap2it.
First, we'll examine the new features in greater depth.
I don't know if this (different versions of Vista) has anything to do with why some users (predating or postdating the change) have different outcomes trying to download the new EPG by Roki.
Since the July 20th cutover to Rovi, I have not received guide data after never having a glitch before. I have run files people have suggested that turns of the Task Manager task tvdownload.microsoft.com, rerun the Channel Guide setup at least 2 dozen times, rebooted even more often.
I thought briefly about just editing the enclosed file by replacing the name Zap2it with Roki in the file and then trying again to download/reload, etc., the Media Center Guide but I realized this file also contains other information such as "HEADEND" (with reference number for Zap2it, not Roki) and since I didn't want give myself a bigger problem, I am seeking help here online.
I can still watch TV on my PC but just don't have any EPG!