Apple later reported that the file I was trying to download was corrupted, and replaced the file.

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Thinking that somehow an errant file managed to make its way into the Maxx and corrupted the camera app, we performed a factory reset on the device, only to find that the program still wouldn't budge.

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When authorised users open the file, they see the watermark, which tells them that the image has not been manipulated or corrupted in some irreversible way.

ECONOMIST: MONITOR