Btukfyl

Here is the code I have problem with:

documentclass[12pt]{article}



usepackage{amsmath}

usepackage{colortbl}



begin{document}



begin{equation}

f(x) = begin{cases}

1, &mbox{if $x=1$} \

2, &mbox{if $x=2$}

end{cases}

end{equation}



end{document}

When I simultaneously use packages amsmath and colortbl, things went wrong with the equations (with begin{cases}...end{cases}). When I compile the file it reports "Use of @startpbox doesn't match its definition. f(x) = begin{cases}" and "Extra }, or forgotten endgroup. f(x) = begin{cases}". However, the file functions well if I comment usepackage{colortbl} out. Does anyone happen to know how to solve this incompatibility issue? Thank you very much!

By the way, below is the complete log file is attached here:

This is pdfTeX, Version 3.1415926-2.5-1.40.14 (MiKTeX 2.9) (preloaded format=pdflatex 2014.9.3)  26 MAR 2019 21:19

entering extended mode

**Incompatibility.tex



("C:Usersjsun1DropboxJunze media biasPart ExperimentWorking paperTechnic

al LaTeX problemIncompatibility.tex"

LaTeX2e <2011/06/27>

Babel <v3.8m> and hyphenation patterns for english, afrikaans, ancientgreek, ar

abic, armenian, assamese, basque, bengali, bokmal, bulgarian, catalan, coptic, 

croatian, czech, danish, dutch, esperanto, estonian, farsi, finnish, french, ga

lician, german, german-x-2013-05-26, greek, gujarati, hindi, hungarian, iceland

ic, indonesian, interlingua, irish, italian, kannada, kurmanji, latin, latvian,

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german-x-2013-05-26, nynorsk, oriya, panjabi, pinyin, polish, portuguese, roman

ian, russian, sanskrit, serbian, slovak, slovenian, spanish, swedish, swissgerm

an, tamil, telugu, turkish, turkmen, ukenglish, ukrainian, uppersorbian, usengl

ishmax, welsh, loaded.

("C:Usersjsun1AppDataLocalProgramsMiKTeX 2.9texlatexbasearticle.cls"

Document Class: article 2018/09/03 v1.4i Standard LaTeX document class

("C:Usersjsun1AppDataLocalProgramsMiKTeX 2.9texlatexbasesize12.clo"

File: size12.clo 2018/09/03 v1.4i Standard LaTeX file (size option)

)

c@part=count79

c@section=count80

c@subsection=count81

c@subsubsection=count82

c@paragraph=count83

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abovecaptionskip=skip41

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bibindent=dimen102

)

("C:Usersjsun1AppDataLocalProgramsMiKTeX 2.9texlatexamsmathamsmath.st

y"

Package: amsmath 2018/12/01 v2.17b AMS math features

@mathmargin=skip43



For additional information on amsmath, use the `?' option.



("C:Usersjsun1AppDataLocalProgramsMiKTeX 2.9texlatexamsmathamstext.st

y"

Package: amstext 2000/06/29 v2.01 AMS text



("C:Usersjsun1AppDataLocalProgramsMiKTeX 2.9texlatexamsmathamsgen.sty

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File: amsgen.sty 1999/11/30 v2.0 generic functions

@emptytoks=toks14

ex@=dimen103

))

("C:Usersjsun1AppDataLocalProgramsMiKTeX 2.9texlatexamsmathamsbsy.sty

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Package: amsbsy 1999/11/29 v1.2d Bold Symbols

pmbraise@=dimen104

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("C:Usersjsun1AppDataLocalProgramsMiKTeX 2.9texlatexamsmathamsopn.sty

"

Package: amsopn 2016/03/08 v2.02 operator names

)

inf@bad=count87

LaTeX Info: Redefining frac on input line 223.

uproot@=count88

leftroot@=count89

LaTeX Info: Redefining overline on input line 385.

classnum@=count90

DOTSCASE@=count91

LaTeX Info: Redefining ldots on input line 482.

LaTeX Info: Redefining dots on input line 485.

LaTeX Info: Redefining cdots on input line 606.

Mathstrutbox@=box26

strutbox@=box27

big@size=dimen105

LaTeX Font Info:    Redeclaring font encoding OML on input line 729.

LaTeX Font Info:    Redeclaring font encoding OMS on input line 730.

macc@depth=count92

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dotsspace@=muskip10

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row@=count96

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maxfields@=count98

andhelp@=toks16

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tagwidth@=dimen109

totwidth@=dimen110

lineht@=dimen111

@envbody=toks17

multlinegap=skip44

multlinetaggap=skip45

mathdisplay@stack=toks18

LaTeX Info: Redefining [ on input line 2844.

LaTeX Info: Redefining ] on input line 2845.

) ("C:Program Files (x86)MiKTeX 2.9texlatexcolortblcolortbl.sty"

Package: colortbl 2012/02/13 v1.0a Color table columns (DPC)



("C:Usersjsun1AppDataLocalProgramsMiKTeX 2.9texlatextoolsarray.sty"

Package: array 2018/11/13 v2.4j Tabular extension package (FMi)

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Package: color 2016/07/10 v1.1e Standard LaTeX Color (DPC)



("C:Usersjsun1AppDataLocalProgramsMiKTeX 2.9texlatexgraphics-cfgcolor

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File: color.cfg 2016/01/02 v1.6 sample color configuration

)

Package color Info: Driver file: pdftex.def on input line 147.



("C:Usersjsun1AppDataLocalProgramsMiKTeX 2.9texlatexgraphics-defpdfte

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File: pdftex.def 2018/01/08 v1.0l Graphics/color driver for pdftex

))

everycr=toks20

minrowclearance=skip48

)

("C:Usersjsun1DropboxJunze media biasPart ExperimentWorking paperTechnic

al LaTeX problemIncompatibility.aux")

LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 7.

LaTeX Font Info:    ... okay on input line 7.

LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 7.

LaTeX Font Info:    ... okay on input line 7.

LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 7.

LaTeX Font Info:    ... okay on input line 7.

LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 7.

LaTeX Font Info:    ... okay on input line 7.

LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 7.

LaTeX Font Info:    ... okay on input line 7.

LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 7.

LaTeX Font Info:    ... okay on input line 7.



("C:Program Files (x86)MiKTeX 2.9texcontextbasesupp-pdf.mkii"

[Loading MPS to PDF converter (version 2006.09.02).]

scratchcounter=count99

scratchdimen=dimen114

scratchbox=box30

nofMPsegments=count100

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)

! Use of @startpbox doesn't match its definition.

<inserted text> @startpbox {

                             @{}l@{quad }l@{}}

l.10 f(x) = begin{cases}



If you say, e.g., `defa1{...}', then you must always

put `1' after `a', since control sequence names are

made up of letters only. The macro here has not been

followed by the required stuff, so I'm ignoring it.



! Extra }, or forgotten endgroup.

@mkpream ...after @startpbox expandafter {#1}}}

                                                  let @endpbox relax let...

l.10 f(x) = begin{cases}



I've deleted a group-closing symbol because it seems to be

spurious, as in `$x}$'. But perhaps the } is legitimate and

you forgot something else, as in `hbox{$x}'. In such cases

the way to recover is to insert both the forgotten and the

deleted material, e.g., by typing `I$}'.



[1



{C:/Users/jsun1/AppData/Local/MiKTeX/2.9/pdftex/config/pdftex.map}]

("C:Usersjsun1DropboxJunze media biasPart ExperimentWorking paperTechnic

al LaTeX problemIncompatibility.aux") ) 

Here is how much of TeX's memory you used:

 1466 strings out of 493921

 18853 string characters out of 3144925

 68398 words of memory out of 3000000

 4794 multiletter control sequences out of 15000+200000

 7050 words of font info for 26 fonts, out of 3000000 for 9000

 841 hyphenation exceptions out of 8191

 34i,9n,20p,232b,122s stack positions out of 5000i,500n,10000p,200000b,50000s

<C:/Users/jsun1/AppData/Local/Programs/

MiKTeX 2.9/fonts/type1/public/amsfonts/cm/cmex10.pfb><C:/Users/jsun1/AppData/Lo

cal/Programs/MiKTeX 2.9/fonts/type1/public/amsfonts/cm/cmmi12.pfb><C:/Users/jsu

n1/AppData/Local/Programs/MiKTeX 2.9/fonts/type1/public/amsfonts/cm/cmr12.pfb>

Output written on Incompatibility.pdf (1 page, 26303 bytes).

PDF statistics:

 18 PDF objects out of 1000 (max. 8388607)

 0 named destinations out of 1000 (max. 500000)

 1 words of extra memory for PDF output out of 10000 (max. 10000000)