biblatex question

[Rich Shepard]

I'm getting a build error at the bibliography grey box at the end of the
document: "Package inputenc error: keyboard character used is undefined."

In the biblatex cheat sheet the first command in the preamble should be
\usepackage[utf8]{inputenc}
but in my document it's
\usepackage[latin9]{inputenc}

I don't see where in Settings I can change that. It must be an option in one
of the settings and I don't know which one.

Pointer needed.

Rich