Chrome has apparently auto updated again and once more they've broken something, so the Export function isn't working in that browser at the moment. This happened once before and within a few days they updated again and it started working. I don't know what it is they break and I don't know how they fix it, but unfortunately all I can do is wait on them. In the meantime, Firefox continues to work properly, so if you don't want to do screen captures, that's your best bet.
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