I am waiting for the answer to Karl Rudnick's question. In my case I was on a clean new install of 4.7.12 and ran an automated upgrade of the "volunteer" extension. The dashboard then shows the same as Rudnick's only with 4.7.12 as the version instead of 4.7.14. After that I upgraded CiviCRM to version 4.7.14 hoping to solve the problem. No luck. I then disabled all CiviCRM extensions (volunteer, booking, and dependencies) since I was not using them. That had no effect either. Clicking on the "Configure Your Dashboard" has no effect. All other functionality within CiviCRM still works and the dashboard was never important to me anyway but the future looks gloomy when something is all screwed up.
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