Both TiVo and Roxio have acknowledged what many of us have known for some time (PVRBlog, TiVo Community, Roxio Support Forums, several emails): TiVo’s fall software update (9.1/9.2) included some sort of change which impacts a percentage of TiVoToGo file conversions and DVD burning from Mac Roxio software. So I checked in with both TiVo and Roxio… TiVo PR confirmed that they’re aware of these issues and are collaborating with Roxio to produce a “timely” fix, and Roxio adds:
As a result of the recent TiVo DVR update and release of Leopard, some Roxio customers using Toast 8 and Popcorn 3 are experiencing technical issues which we are actively working to resolve. We plan to release updaters in the near future.
Until those updates land (no ETA was given), I suggest trying the free TiVoDecode Manager or SeasonPassGetter. You might even discover that you didn’t have a need for Roxio’s software after all.