Hi aynot707, If you are trying to view a local file in the browser, please make sure the file has the correct permissions to be viewed by the application. ASPX has to be hosted on an IIS windows server, meaning you won't be able to save an ASPX page to file and do right-click>open with Firefox. You can convert the file by changing the extension as well. If you have more questions on this, please post back, it may help other users. Thank you.