I just ran into a strange error on two different AO3 stories I was updating.
Thankfully, when I tried the link in the ID it went to a screen telling me there was no such story. I usually see 'NoneType' errors when I mess up coding my personal ini, so I didn't realize that it meant the story was gone.
Luckily the above story had been replaced (
http://archiveofourown.org/works/1014338) by the author. However, when I tried to add the new url and said yes to overwriting the old url, it did not update. I eventually deleted the story and then added the new url. It worries me that the story did not overwrite when I told it to and thought I should mention it.