I've seen a machine where LayoutTestHelper crashes on launch because of some color profile misconfiguration. But we still run the tests, and fail some, because LayoutTestHelper couldn't set a proper color profile.
Created attachment 249780 [details] proposed fix
rdar://problem/19990425
Comment on attachment 249780 [details] proposed fix Clearing flags on attachment: 249780 Committed r182268: <http://trac.webkit.org/changeset/182268>
All reviewed patches have been landed. Closing bug.