Now I understand how this process works.
I tried to recreate the problem with a task list from scratch and could not.
Then I pulled the attached files from the first message and tried to add images to the Before_sample file to recreate the after_sample file. I could not do this.
So the only clues I can give to the actual bug is there is something unique about the after_sample task file in the first message.
So, working through this process, I found that recreating what I thought was included in the comments is now working okay.
If you can gain information from the attached after_sample task file, it still will crash the ToDoList application.
Regards,
Mark