I edited my CV many, many times to get the formatting to look just right because I wanted sections to have clean breaks between pages (rather than the next page having like two sentences from the previous section on it). When I recently looked back at it to print copies to take with me to an interview I realized that I had forgotten to change a line where I wrote about something and then said "(see pg. 5)" but I had actually deleted page 5 in my myriad of edits so that should have said "see pg. 4"... I was mortified. That CV was uploaded on all of my applications and referred to a page that was non-existent.
I also noticed that, in the first email I sent to my POI before sending applications, I wrote Dr. (First name) at the top instead of Dr. (Last name7. I think I meant to write both the first and last name but then forgot to write the last?? Or maybe I misread the name and thought the first was the last?? Ugh. I don't know what I was thinking but I didn't notice that until the POI replied to that email months later (they replied when I initially sent it but then they replied to that same email again later) to ask me for an interview. I was shocked that I was even given a chance after seeing that I made such a stupid mistake on my very first correspondence!