The Error 500 is a generic error format which does not give any indication regarding the actual occurred error, which is generally a scripting error. In order to view as a whole the errors returned by scripts, you need to set the appropriate parameter in the Internet Explorer® advanced options: click on Tools, internet Options, Advanced and deselect “Show short HTTP error messages”.

In this way, rather than a general error 500, detailed information will be given regarding the script and possible committed errors, deducible from the type of error.