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I just tried "Set up your rotation stations," and "Figure out how many volunteers you need," and both do the same thing.  It pops out the little sidebar to click on the link, the link leads to the 404 error.  So, from "Set up your rotation station," the bar says "Rotation settings," and when I click on that it goes to the 404.  This happens on each of the checklist items, except the ones that are just to print something.