LaTeX.org

Sorry for failing in my first post.
\documentclass[11pt]{article}
\usepackage{geometry}
\geometry{letterpaper}
\usepackage{amssymb}
\usepackage{epstopdf}
\usepackage{setspace}
\usepackage{natbib}

\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{textcomp}

\interfootnotelinepenalty=1000 ...

I'm trying to change from computer modern to lmodern. The following is my preamble.
\documentclass[11pt]{article}
\usepackage{geometry}
\geometry{letterpaper}
\usepackage{amssymb}
\usepackage{epstopdf}
\usepackage{setspace}
\usepackage{natbib}

\usepackage{lmodern}
\usepackage[T1]{fontenc ...