I've been using this forum for years but never posted. Thanks for all the great information.
We have a new roamio and mini and have comcast. After much work and consulting of this forum, i can get xfinity on demand to work. The final issue in my case was a loose cable!
This is my problem now - I can get xfinity on demand to work on the Roamio OR the mini but not both simultaneously. I get an SRM error.
Am I limited to one on demand show at a time?