biblatex problems

This might have been addressed elsewhere but if so please point me to it,
but I have moved computers to windows 8. I use mendeley for citation
management and it creates a bib file that I pass to latex, which uses the
keys I put in there. I am using apa format via biblatex. I was recompiling a
document on my computer and the same code fails, it will work on my other
computer but I want it to work on this one. I keep getting error messages
from undefined citations to missing biblatex package. I have uninstalled and
reinstalled miktek a few times, tried to change permissions, and changed
programs that compile it. It has an empty bbl file.  My code is below, it
use to work, this is a minimal example as the only thing is a citation, if
the citation will work its ok because everything else compiles right.
Attached is the log file, it says to use backend=biber and I do that and
still doesn't compile right. When I take away the style=apa it will work
some but it has the year but no name from the citation and no bibliography
page.

 

\documentclass [12pt]{article} 

\usepackage [american]{babel}

\usepackage {csquotes, fancyhdr, amsmath, graphicx, verbatim, smartref,
tabularx, longtable, framed, caption, epstopdf, multirow, float, array,
enumerate, enumitem}

\usepackage [style=apa]{biblatex}

\usepackage [usenames,dvipsnames]{color}

\usepackage [margin=1in]{geometry}

\usepackage [small,compact]{titlesec}

\usepackage [colorlinks=false,linkcolor=red]{hyperref}

\bibliography{C:/Users/Joe/Dropbox/library}

 

\raggedright

\renewcommand\headrulewidth{0pt}

\tolerance = 1500 %

\hyphenpenalty=10000

\headheight=15.0pt

\linespread{2}

\setlength {\parindent} {0.5in}

\setlength {\parskip} {0em}

\setlength {\hangindent}{0.5in}

\pagestyle{fancy} % Determines basic page format; often refers to headers
and footers

\titleformat{\chapter}{\normalfont\bfseries\centering}{}{0em}{}

\titleformat{\section}{\normalfont\bfseries\centering}{}{0em}{}

\titleformat{\subsection}{\normalfont\bfseries}{}{0em}{}

\titleformat{\subsubsection}{\normalfont\it}{}{0.5in}{}

\titleformat{\paragraph}{\normalfont\it}{}{0.5in}{}

\titlespacing{\chapter}{0em}{0em}{0em}

\titlespacing{\section}{0em}{0em}{0em}

\titlespacing{\subsection}{0em}{0em}{0em}

\titlespacing{\subsubsection}{0em}{0em}{0em}

\titlespacing{\paragraph}{0em}{0em}{0em}

\DeclareLanguageMapping{american}{american-apa}

\begin{document}

\textcite{Hox2010}

\newpage

\printbibliography{}

\end{document}

 

 

@book{Hox2010,

address = {New York},

author = {Hox, Joop J.},

edition = {2},

file = {:C$\backslash$:/Users/Joe/Misc/Mendeley PDFs/Multilevel Analysis
Techniques and Applications.pdf:pdf},

isbn = {1848728468},

keywords = {Linear Models},

mendeley-tags = {Linear Models},

pages = {392},

publisher = {Routledge Academic},

title = {{Multilevel Analysis: Techniques and Applications, Second
Edition}},

year = {2010}

}

-------------------------------------------

Joe King, M.A.

Ph.D. Student

University of Washington - Seattle

206-913-2912

 <mailto:[email protected]%3cmailto:[email protected]>
[email protected]<mailto:[email protected]>

I have no special talent. I am only passionately curious. --Albert Einstein

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