You don't currently have any Twitter Apps.

it gives me a created success message but nothing appears

This sounds like an issue on Twitter's part. I'm not sure why it's not showing the apps in your area, especially if it shows that it was created successfully. I just went through the instructions above and the only thing different is that the "Create New App" button isn't blue or in the top right. Beyond that, after I set the name, title, and URL, the App is created and I'm brought to the App Management page with more settings.

Can you take a screenshot of the "Created Success" message you're getting and then what you see after that?

Thanks,
Alex

After you try to save the application you've created, it simply brings you back to the main developer area with "You have no apps"? If so, that sounds like a Twitter bug. We don't control the app creation process at all, so there's nothing we can do in that instance. If that's really what you're getting, all I can do is suggest reporting a bug to Twitter itself.
twittercommunity.com/

If you are getting a different message or anything else that doesn't seem like a bug on their end, let us know, and we'll gladly help try to narrow things down for you.

Thanks,
Alex