ipython/ipython — pull request #6558 by jhamrick (2014-09-27 00:45:06+00:00)
Title: Handle kernel start failures more gradefully

If a user does not have a kernel installed on their system, but they try to open a notebook with that kernel, they will get a "kernel died" error, which doesn't make a lot of sense because the kernel was never running. This pull request attempts to handle kernel start errors more gracefully, and give the user a more informative message.