Comment 9 for bug 1495207

I really don't know. Since channel.ini is created on the server when an image is published, it could have possibly been a server bug. I would expect other people to get hit by it too, and I think at least one other person was. That should be easy to verify by pulling down the data file from system-image.ubuntu.com for the device, channel, and version you got upgraded to, and unpacking it manually. The only other possibility is that something got corrupted in recovery, but that seems unlikely. I know of nothing else that touches channel.ini, and of course I'm assuming that you didn't edit it manually.