I'm giving jpgraph a try for the first time. Went thru the install with everything left at default. Used some sample code from a tutorial over at phpfreaks.com. I'm getting an error message that I don't know how to address. Maybe someone can shed some light? This is the message in my browser:
Internal error: Chosen locale file for error messages does not exist.
Internal error: Chosen locale file for error messages does not exist.