Hi,
using XP and
GNU Emacs 24.3.1 (i386-mingw-nt5.1.2600)
of 2013-03-17 on MARVIN
exporting from an utf-8 org file to a buffer unfortunately still fails, e.g.
% Created 2013-08-08 Do 14:46
\documentclass[11pt]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{fixltx2e}
\usepackage{graphicx}
\usepackage{longtable}
\usepackage{float}
\usepackage{wrapfig}
\usepackage[normalem]{ulem}
\usepackage{textcomp}
\usepackage{marvosym}
\usepackage{wasysym}
\usepackage{latexsym}
\usepackage{amssymb}
\usepackage{amstext}
\usepackage{hyperref}
\tolerance=1000
\author{Jan-Mark Batke}
\date{\today}
\title{tmp}
\hypersetup{
pdfkeywords={},
pdfsubject={},
pdfcreator={Emacs 24.3.1 (Org mode 8.0.7)}}
\begin{document}
\maketitle
\tableofcontents
öäü
% Emacs 24.3.1 (Org mode 8.0.7)
\end{document}
but ascii coding of the buffer is latin-1.
Accordingly, on linux the latin-1 file export fails.
I am using the org-plus-contrib package now (8.0.7-2-gf51616-elpaplus).
Best
Jan-Mark