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05-09-2017, 07:16 AM   #31
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I had the lockup problem in Scotland last year. It was fairly repeatable, in ~1C weather, shooting panoramas with mirror lockup. This, even with freshly charged batteries. I stopped using mirror lockup, which helped considerably.

05-09-2017, 09:14 AM   #32
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Did you shoot the shots in quick succession? Maybe it was writing the previous while you were already doing something else.
05-09-2017, 09:37 AM   #33
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Not specifically germane to the OP's query, but I believe this happens with most electronic gear. Last night my BluRay player locked up. I had to roll out the Media Center, unplug and replug it. Same happens periodically with my Wireless Access Point. Unplug/Replug it and I'm good for several months.

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