Cannot record most/many programs, but empty target file exists

[Lone_Stranger]

I've scheduled a number of programs which are sequential in the TV guide, and none of them record - except the first in the series - sometimes.

In this example, I'm attempting to record Varney on channel 149 (FBN) at 9am. The target recording file is created, but it is empty. Another program was also requested for 9am on another channel, but it too came up empty. These two programs were requested to be recorded right after another program on channel 1214 seemed to be recorded correctly at 6-9am.

This scenario repeats each day...

No pre or post padding. 4 tuner Ceton with 2 tuners disabled (only testing with 2 tuners).

Logs attached...

[sub]

I can see it's gone through the motions and tried to record, but it looks like the device is failing to change channels. When this happens, you'll collect the logs from the Ceton device. Are you sure the tuner isn't in use by any other software?

2015-09-21 18:59:00.231 [DEBUG][5] DRI: About to tune channel: 1003
2015-09-21 18:59:00.378 [DEBUG][5] DRI: CAS.SetChannel() failed