The first problem I ran into was that nobody that was left was sure what code was running in production... I then ran some diffs on the different copies of source code we found to find some of the biggest changes.
After that, I dug through the code and found that whoever wrote the code didn't know what to do about exceptions... So a lot of times all you could do was retry a few times and then send out an alert.
Collection
[
|
...
]