
Render/postrender events were missing from bg rendering (and also from rendering called inside scripts). Found this because of bug #17389, the code to prevent race conditions with pynodes is currently inside BPY_do_all_scripts (that runs scriptlinks) and so was not being called in bg mode or rendering via scripts. http://projects.blender.org/tracker/?func=detail&atid=125&aid=17389&group_id=9