Possible Duplicate:
Option clash for package xcolor
While trying to do this:\usepackage [ table ]{ xcolor } I get this error:
LaTeX Error: Option clash for package xcolor.
All the packages
\documentclass{article} % For LaTeX2e
\usepackage{nips12submit_e,times}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage{graphics}
\usepackage{subfigure}
\usepackage{a4wide}
\usepackage[latin9]{inputenc}
\usepackage{fancyhdr}
\usepackage{amsmath}
\usepackage{amstext}
\usepackage{float}
\usepackage{listings}
\usepackage{url}
\usepackage{multirow,tabularx}
\usepackage [ table ]{ xcolor }
\usepackage { hhline }
Any idea what is wrong ?

eso-picloadsxcolor(without any option); in turn it'snips12submit_ethat loadseso-pic, so you have to say\usepackage[table]{xcolor}before\usepackage{nips12submit_e}. Note that loading ofa4wideis deprecated (and also dubious, as thenipspackage sets the page geometry), whilesubfigureis obsolete. – egreg Dec 16 '12 at 11:02