Working on a team to take functionality from the latest version of an old executable and put it into a new web-based app.

Coworker: I can't get the results to match so I'll just change the options I'm using in the original program until they match.

Me: That's not how this works. That's not how any of this works. Same options on both source and new app, and you should get identical results. Otherwise, there is a defect.

I walk over to look at what CW set up.

M: "Why do you have this box ticked? That option doesn't even exist in the new version."

CW: I don't know. It was there?

M: (trying not to lose my cool, sets up options the way they are supposed to be) This is actually a pretty simple program. It just queries the DB, so we have to make sure the queries and results are the same.

CW: (runs it) Still doesn't match.

M: What version of the source app are you using? Make sure it's the latest.

CW: I can't tell. There is no help/about menu.

At this point, I kinda want to quit and live in a cave.

M: You don't need that. Check the executable in Windows Explorer.

CW: What do you mean?

At this point, I'm sure I look like Anger from Inside Out. I show them how to do it (right click file, properties, etc), wondering how they got this far in their career without knowing how to do the simplest things.

M: (surprised and irritated) This... isn't the current version. It's two versions old.

CW: Well, I couldn't get the newest version to return the results that matched the test cases, so I used the version that did...

M: You can't do th... Why wou... How is that acc... (turns around and walks out to tell the manager he hired a moron)