We recommend that you setup a local web server and run this application in it. Make sure your web server has correct MIME types for JSON files(application/json). At the same time, you can run this app from a file system (w/o a web server), but take into account the following notes.

- Run Google Chrome with the --allow-file-access-from-files option parameter: chrome.exe --allow-file-access-from-files

- In Opera 12+, find the Allow File XMLHttpRequest flag in the User Prefs section of Opera config, set this flag to true and save changes.

- Run FireFox as is.

- For Internet Explorer and Microsoft Edge, you will have to setup a local web server and run the app in it.