Remember to cover the basics, that is, what you expected to happen and what in fact did happen. You don't know how to make a good report? See
https://orgmode.org/manual/Feedback.html#Feedback Your bug report will be posted to the Org mailing list. ------------------------------------------------------------------------ I spent far too long figuring out why I was getting this error when I pulled up my week agenda with C-c a a org-duration-to-minutes: Invalid duration format: "+2:00" The string "+2:00" doesn’t appear anywhere in my org files. After bisecting the list of files, then the contents of the one that was causing issues, I found that it was due to this timestamp: <2018-05-16 Wed 22:00-26:00> There are only 24 hours in the day, but this says 26. Oops. This surprised me, because this had been created by doing: C-c . 22:00+4 I use this shortcut a lot, since it’s easier for me to think about the duration rather than do the mental math to come up with the ending hour. I’m not sure it’s a good idea to insert a span timestamp in this case, but I think at a minimum, Org ought to error in this case, rather than producing a timestamp it can’t consume. It would also be good if the error was clearer, ideally telling you the exact file/line the erroneous timestamp was on. Emacs : GNU Emacs 25.2.2 (x86_64-pc-linux-gnu, GTK+ Version 3.22.30) of 2018-05-07, modified by Debian Package: Org mode version 9.1.13 (9.1.13-elpa @ /home/ieure/.emacs.d/elpa/org-9.1.13/)