Just posted the same issue last night (#274865), which, as far as I could tell, affected only a particular channel.
After posting last night, I restarted the server, deleted every scheduled recording (noticed a few strange duplicates, where I would have to cancel the series recording multiple times), and then re-added all recordings from the iOS app, rather than the web interface.
This morning anyway, the first recording on what I thought was the problem channel completed successfully (2 hours long). I mentioned that recordings were succeeding on PBS, but it occurs to me now that the PBS News Hour recordings were scheduled using the iOS app after the PMS update, rather than in the web interface prior to the update. An excerpt from my log, for one failed recording (previously scheduled, web interface) and one successful recording (newly scheduled, iOS) is attached.
