Italic numbers using Linux Libertine

Question

I'm trying to typeset a document using xelatex with main font Linux Libertine. Here's the minimal working example:

\documentclass{article}
\usepackage{fontspec}
\setromanfont[
  Ligatures      = TeX,
  BoldFont       = {Linux Libertine Bold},
  ItalicFont     = {Linux Libertine Italic},
  BoldItalicFont = {Linux Libertine Bold Italic}
]{Linux Libertine}
\begin{document}
\textit{1 foo}
\textbf{\emph{1 foo}}
\textbf{1 foo}
\end{document}

When compiled, the second and third "1 foo"s appear as they should, but the "1" is missing from the first "1 foo", like this:

It seems as though Linux Libertine does not support italic numerals.

What am I doing wrong here? Is there any way to make xelatex support the Linux Libertine font in a way that makes italic numerals possible?

If it helps, I'm using TeXWorks on an HP running Windows 8.1.

Edit: The only strange thing that shows up in the log file is a warning:

* LaTeX warning: "xparse/redefine-command"
* 
* Redefining document command \oldstylenums with arg. spec. 'm' on line 144.

Edit 2: When I tweak the document so that the only content is \textit{0123456789}, compilation with xelatex fails, and the following error is output:

** WARNING ** Invalid CMap
** ERROR ** pdf_ref_obj(): passed invalid object.

Near the end of the log file, there is a bunch of warnings looking like this:

Missing character: There is no   in font Linux Libertine Italic/OT:script=latn;
language=DFLT;mapping=tex-text;mapping=tex-text;!
Missing character: There is no 0 in font Linux Libertine Italic/OT:script=latn;
language=DFLT;mapping=tex-text;mapping=tex-text;!

Answer 1

Both the .ttf fonts, called Linux Libertine, and the .otf fonts, called Linux Libertine O, work fine on my Windows 7 system.

\documentclass{article}
\usepackage{fontspec}
\setromanfont[
  BoldFont       = {Linux Libertine Bold},
  ItalicFont     = {Linux Libertine Italic},
  BoldItalicFont = {Linux Libertine Bold Italic}
]{Linux Libertine}
\begin{document}
\textit{1 foo}
\textbf{\emph{1 foo}}
\textbf{1 foo}
\end{document}

\documentclass{article}
\usepackage{fontspec}
\setromanfont[
  BoldFont       = {Linux Libertine O Bold},
  ItalicFont     = {Linux Libertine O Italic},
  BoldItalicFont = {Linux Libertine O Bold Italic}
]{Linux Libertine O}
\begin{document}
\textit{1 foo}
\textbf{\emph{1 foo}}
\textbf{1 foo}
\end{document}

Something probably went wrong when you installed your fonts, so I suggest you simply reinstall them and try again.

Answer 2

Your code works fine. I get the following result

Answer 3

Use

\documentclass{article}
\usepackage{libertine}% detects itself the used engine pdftex, xetex, luatex
\begin{document}
\textit{1 foo}
\textbf{\emph{1 foo}}
\textbf{1 foo}
\end{document}

The package libertine does the correct font setting for you. Install the package from CTAN and the fonts too. Then you have all in the right place.