Only newly scanned channels = "Unable to find available capture device"

[bickertn]

Because NBC has changed it's greater Boston station and I was having trouble getting them included in NPVR, I recently posted "NPVR won't pick up "Hauppauge WinTV-dualHD ATSC Tuner channels" - which was solved when I did a another SCAN at SUB's direction (first recent SCAN didn't get the new channels). That day I was able to watch the new (8.1, 15.1, 60.5) channels. Next 2 days spent trying to get their program schedules to show; this morning I realized that the new channels (and only the new channels) were set to "DVB/ATSC EPG" so I switched them over to Schedules Direct (which provides my scheduling info for all channels). That's when I tried to watch these three channels and instead of appearing I got: "Unable to find available capture device." All my previously scanned channels are working. I did a search for this topic and read through the dozen plus posts but wasn't able to ascertain a solution to this problem (if it's there, I'm missing it) - so I'm posting this new thread.
I have attached the logs.
thanks
bob "bickertn"

[bickertn]

SOLVED. Simply waiting until the next day (today) and without any further intervention, the "unable to find available capture device" message is gone and the channels are functioning. Given that yesterday all other channels were functioning except for these three, it wasn't a hardware problem - nor were any other settings different with the sole exception that these three defaulted to a different source for program schedules (DVB/ATSC EPG) rather than Schedules Direct. Perhaps switching the scheduling source was the cause (until Schedules Direct updated later last evening) but this seems very unlikely - at least to me.
Given that no one else weighed in on this thread, it's likely to remain a mystery. However, now that I can watch and record the Super Bowl next Sunday, I'm not going to fret about it.