Author: Tim Hunt
MDL-29854 questions: display better message and more useful continue
when an error occurs in the middle of processing responeses.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=21c5b22d972b0d3d237d4a9086ff7d2d4740ea24
http://github.com/moodle/moodle/commit/21c5b22d972b0d3d237d4a9086ff7d2d4740ea24
+ 2.1 en [errorprocessingresponses,core_question]