Aloha.

So, even this MWE, the export to *.ics does not work as expected. The test.ics file has no events when

M-x org-icalendar-export-to-ics

is invoked.
========================= Contents of test.org listed below =================
-*- org-icalendar-use-deadline: (todo-due); -*-
MY PROJECT -*- mode: org -*-
#-*- mode: org -*-
#+STARTUP: showall

* Welcome to Org mode

Welcome, and thanks for trying out Org mode. Making outlines in
Org is very simple. It is just text! Just start typing.
* This is a headline, it starts with one or more stars
A heading has one star, a sub-heading two, etc.
* Working with lists
** Moving around in our outline
** TODO Moving around headline
** TODO This is an event with a Deadline
DEADLINE: <2024-06-20 Thu -30d>
========================= Contents of test.org listed above =================

Any advice would be appreciated.
J.

On 6/8/24 10:38, Ihor Radchenko wrote:

John Helly <hellyj@ucsd.edu> writes:

I modified the variable specification to be:

-*- org-icalendar-use-deadline: event-if-not-todo;  -*-

and get the following error:

'Wrong type argument: listp, event-if-not-todo'

That's because the value should be a list.

-*- org-icalendar-use-deadline: (event-if-not-todo);  -*-

-- 
John Helly / San Diego Supercomputer Center / Scripps Institution of Oceanography 
https://www.sdsc.edu/~hellyj / 808 205 9882 / 760 8408660