Hauppauge wintv-dualhd not being detected after 7.2 shield update

Sorry took a while for me to analyze the logs you provided. They do show some successful tuning.

Logs show successful tuning for these channels
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An earlier attempt to tune channel 2 failed at 19:00:01 as it took almost a minute to get the stream to start

The failures were the following with some tunes taking too long and getting timed out
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Do all these tune ok on the PC ? And are they still failing on the shield ? If they are ok on PC using WinTV but fail on the shield with Plex, can you tell me from the wintv config information what frequencies they get tuned on?