[texhax] extra endgroup problem (apacite bibtex)

[Mehmet Ergun]

Hi,

I'm probably doing something dumb, but I don't understand what it is.
I've been working on this error for an hour now with no results...

When I try to build, I get the following error if I use the \fullcite
command instead of \cite:

l.41 Bla bla.~\fullcite{smith1963}

?
(./Midterm2.bbl
! Undefined control sequence.
\citeauthoryear #1#2#3->\BCA
                             {#1}{#1}
l.10 smith1963}
               %
?
! Undefined control sequence.
\org@@lbibitem ...orend ]\NAT at ifcmd #1(@)(@)\@nil
                                                  {#2}
l.10 smith1963}
               %
?
) [1] (./Midterm2.aux) )


I get this in these files:

file.tex:
\documentclass[letterpaper,10pt]{article}

\usepackage{apacite}
\usepackage{natbib}

\usepackage[utf8]{inputenc}
\usepackage[american]{babel}
\usepackage[dvips]{graphicx}

\usepackage[dvips]{hyperref}

\hypersetup{%
      pdftitle={Paper},
      pdfauthor={Name},
}

\usepackage{setspace}
\onehalfspacing

\usepackage[verbose, paper = letterpaper,
            lmargin = 1.3in, tmargin = 1.5in,
            centering]{geometry}

\author{Mehmet Atif Ergun}
\title{SOCY620 Final}
\date{12-10-2007}

\begin{document}

\subsubsection*{Question 2}

Bla bla.~\fullcite{smith1963}

\bibliographystyle{apacite}
\bibliography{file}

\end{document}

file.bib (generated with JabRef):
@BOOK{polanyi1944,
  title = {The Great Transformation: The Political and Economic Origins
of Our Time},
  address = {Boston},
  publisher = {Beacon Press},
  year = {1944},
  author = {Polanyi, K.}
}

@BOOK{smith1963,
  title = {An inquiry into the nature and causes of the wealth of nations},
  address = {Illinois},
  publisher = {Irwin Paperback Classics in Economics},
  year = {1963 (1776)},
  author = {Smith, A.},
  volume = {1}
}

@BOOK{smith21963,
  title = {An inquiry into the nature and causes of the wealth of nations},
  address = {Illinois},
  publisher = {Irwin Paperback Classics in Economics},
  year = {1963 (1776)},
  author = {Smith, A.},
  volume = {2}
}

@BOOK{tucker1978,
  author = {Marx, K.},
  title = {The {M}arx -- {E}ngels Reader},
  address = {New York},
  publisher = {W. W. Norton \& Company},
  year = {1978},
  editor = {Tucker, R. C.}
}

I hope you can help,
Thanks,
Mehmet.