This might not be the place, but you never know.

Installed MinionPro.
Installed MinionPro Symbol.

Running this little test program in LaTeX:

\documentclass{article}
\usepackage{MnSymbol}
\usepackage{MinionPro}
\usepackage[,textlf,minionint] {MinionPro}
\usepackage[T1]{fontenc}
\usepackage{textcomp}
\begin{document}
The quick brown fox jumps over the lazy dog.
\end{document}

It generates a completely blank PDF document when I typeset.
It seems to get to here:

(/usr/local/texlive/2007/../texmf-local/tex/latex/adobe/minion pro/fontaxes.sty)

And then I get this error message:

! LaTeX Error: Command `\hbar' already defined.

Apparently \hbar is a symbol for some physical constant. Some physical constant (I might add) that I'll never jolly well ever use the symbol for!!!

If i change the order of the program so that the MinionPro usepackage loads before the MnSymbol usepackage then I get this error message instead:

!LaTeX Error: Option clash for package MinionPro.

Any thoughts anyone??