Mark, my advice is to try version 5 of SageTV first, just in case. I don't have any experience with version 6 unfortunately. It's entirely possible they simply broke something in the latest build.

Wiith other versions it was a simple setup to get Canadian data. Just type in the Canadian Postal Code where it asks for Zip/Postal code (I can't remember, but it might have been labeled as only Zip which could throw people off).

You can also find info on modifying the local lineup in the forums I believe.