Ok. I've put a static file up on Amazon S3 with the corrected content, and my Media Center is now updating the guide hooray!

Only 1 file needed: http://haventech-epg-proxy.s3.amazonaws.com/epg/GetTVServicesMetaInfo.html

Everything else is still updated from Haventech (dropbox) directly.

My process to change the domain name being used was as follows


1. Create a file with the following name - external.ini - and the following contents:


Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Service\EPG]
"discSvc"="http://haventech-epg-proxy.s3.amazonaws.com/epg/GetTVServicesMetaInfo.html"



2. Create a cmd file named whatever you want (e.g. fixmyepg.cmd) with the following contents:

net stop "GoNZo Guide Discovery Service"
reg import external.ini
net start "GoNZo Guide Discovery Service"

3. Open a command prompt as administrator and run the CMD script you just created.

Note: I take no responsibility for you screwing up your registry. Nor do I promise that this file will live in this location forever.

Hope this helps someone.