I've FTPed a new installer file (for an app I'm maintaining) up to a server on the web, replacing the old installer file.
My boss has already sent an email to our users saying "get the new installer from this URL on Monday". The URL looks like "http://app.ourwebsite.com/downloads/installer.zip". I'm afraid I can't give you the real URL because there's some sensitive information up there. When I visit the URL though, I get the old installer. This happens in any of my browsers (FF, IE, Chrome), regardless of whether I clear the browser cache, used the browser before to download the file, close and re-open the browser.
If I change the capitalisation of any letter of the file-name part of the URL, I get the new installer.
What's going on here? And more importantly, how do I fix it so that when people visit the URL my boss sent out (in its original capitalisation), they get the right file?