With latest version of org: Org mode version 9.0.2 (9.0.2-elpaplus @ /home/me/.emacs.d/elpa/org-plus-contrib-20161214/)
I get the following error when trying to create an agenda: org-agenda-get-day-entries: Wrong type argument: number-or-marker-p, "<2015-03-07 Sat>" with a construct like this: *** DONE Do Something CLOSED: [2015-03-05 Thu 15:14] SCHEDULED: <2015-03-05 Thu> DEADLINE: <2015-03-07 Sat> When SCHEDULED and DEADLINE removed, no problem.