Earlier on Friday, popular third-party Instagram app, 6tag, stopped working. Don't worry, because a fix has just been released. Just make sure to get the latest version of 6tag from the Windows Phone Store. Superstar developer, Rudy Huyn, said Instagram has changed some value format in the backend, which caused the errors. He was quick to fix the problem, so go update the app and continue uploading those selfies!
Full story from the WPCentral blog...