When creating a sample Jira Agile board the process fails with an exception. The UI gets stuck, I had to refresh the page to continue using Jira. The sample project was actually created despite the error. See screenshot attached.

Details
Exception: Uncaught TypeError: Cannot read property 'body' of undefined
Resource: https://bensayers.atlassian.net/s/d41d8cd98f00b204e9800998ecf8427e/en_US-7w2zw-1988229788/6204/8/cb2d87af39ed0d46e7940c531241f9c1/_/download/contextbatch/js/greenhopper-rapid-non-gadget,atl.general,jira.global/batch.js
Line: 2726
Environment
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36