Thanks for the info.
%e caused a load failure:
ARS1129E Row 1: The string "Feb 1 2016" could not be converted to a date from the format of %b %e %Y
%d also failed:
ARS1129E Row 1: The string "Feb 1 2016" could not be converted to a date from the format of %b %d %Y
I've tried quite a few other combinations which all failed, including removing embedded spaces with %b%e%Y. I haven't found one that works yet.
If these are my only options, I'll have to rethink the report design.