I am doing a Beamer presentation based on an article, so I do a lot of copy and paste from one document to another. Basically everything is working fine, but for some reason, the Icelandic special characters that I use in some examples and that come out fine in the article, just appear as black squares on the slides in the Beamer presentation, although I load the same packages in the preamble. Heres an example of the preamble and the relevant document commands:
\documentclass[t,compress]{beamer}
\usefonttheme[onlymath]{serif}
\usetheme{Szeged}
\usepackage[english]{babel}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[cyr]{aeguill}
\usepackage{tipa}
\usepackage{eurosym}
\usepackage{wasysym}
\usepackage{colortbl}
\usepackage{wrapfig}
\usepackage{graphics}
\usepackage{linguex}
\usepackage{cgloss4e}
\usepackage{csquotes}
\usepackage{xspace}
\usepackage{color}
\usepackage{xyling}
\usepackage{setspace}
\usepackage{amsfonts}
\usepackage{phonetic}
\usepackage{multicol}
\usepackage{booktabs}
\usepackage[backend=biber, style=authoryear-comp]{biblatex}
\addbibresource{ref.bib}
}
\title{XXX}
\author{ZZZ}
\date{\today}
\begin{document}
\frame {
\ex. \ag. Jón harmar að [Þessa bók] \textbf{skuli} ég hafa lesið.\label{4a} \\
Jon regrets that this book shall I have read.\\
``John is sorry that I'll read this book.''\\
\bg. Hann efast um að hun \textbf{hafa} [ekki] hitt Þennan mann.\label{4b} \\
He doubts about that she has not met this man.\\
``He doubts that she has not met this man.''\\
}
...
\end{document}
Any ideas why the charachters won't print in beamer when they do in the \documentclass{article}?
\usepackage[cyr]{aeguill}