A student of mine have the exact same problem on a laptop with Windows 10, and
I tried to help her fix it: the log didn’t seem to contain any error (!)—I copy
it below— so I reinstalled MikTeX and LyX, reconfigured LyX, but to no avail.
It keeps doing the same thing. Any idea? Should she try to install an older
version? By the way, I had trouble on her system trying to synchronize the
MikTeX repository and got this kind of error (MiKTeX Problem Report
Message: Couldn't connect to server
Data:
Source: Libraries\MiKTeX\PackageManager\CurlWebSession.cpp
Line: 348
MiKTeX: 2.9
OS: Windows 10 Home, 64-bit, build 15063
Invokers: non-existing/explorer
SystemAdmin: yes
PowerUser: no
Root0: C:\Users\NAIMA\AppData\Roaming\MiKTeX\2.9
Root1: C:\Users\NAIMA\AppData\Local\MiKTeX\2.9
Root2: C:\ProgramData\MiKTeX\2.9
Root3: C:\Program Files (x86)\MiKTeX 2.9
UserInstall: C:\Users\NAIMA\AppData\Roaming\MiKTeX\2.9
UserConfig: C:\Users\NAIMA\AppData\Roaming\MiKTeX\2.9
UserData: C:\Users\NAIMA\AppData\Local\MiKTeX\2.9
CommonInstall: C:\Program Files (x86)\MiKTeX 2.9
CommonConfig: C:\ProgramData\MiKTeX\2.9
CommonData: C:\ProgramData\MiKTeX\2.9)
I don’t know if the problems are linked...
———
> This is pdfTeX, Version 3.14159265-2.6-1.40.18 (MiKTeX 2.9.6500) (preloaded
> format=pdflatex 2018.2.2) 5 FEB 2018 09:59
> entering extended mode
> **./newfile1.tex
> (newfile1.tex
> LaTeX2e <2017-04-15>
> Babel <3.15> and hyphenation patterns for 75 language(s) loaded.
>
> ("C:\Program Files (x86)\MiKTeX 2.9\tex\latex\base\article.cls"
> Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
> ("C:\Program Files (x86)\MiKTeX 2.9\tex\latex\base\size10.clo"
> File: size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
> )
> \c@part=\count79
> \c@section=\count80
> \c@subsection=\count81
> \c@subsubsection=\count82
> \c@paragraph=\count83
> \c@subparagraph=\count84
> \c@figure=\count85
> \c@table=\count86
> \abovecaptionskip=\skip41
> \belowcaptionskip=\skip42
> \bibindent=\dimen102
> ) ("C:\Program Files (x86)\MiKTeX 2.9\tex\latex\base\inputenc.sty"
> Package: inputenc 2015/03/17 v1.2c Input encoding file
> \inpenc@prehook=\toks14
> \inpenc@posthook=\toks15
> ("C:\Program Files (x86)\MiKTeX 2.9\tex\latex\base\latin9.def"
> File: latin9.def 2015/03/17 v1.2c Input encoding file
> )) ("C:\Program Files (x86)\MiKTeX 2.9\tex\latex\amsmath\amsmath.sty"
> Package: amsmath 2017/09/02 v2.17a AMS math features
> \@mathmargin=\skip43
> For additional information on amsmath, use the `?' option.
> ("C:\Program Files (x86)\MiKTeX 2.9\tex\latex\amsmath\amstext.sty"
> Package: amstext 2000/06/29 v2.01 AMS text
> ("C:\Program Files (x86)\MiKTeX 2.9\tex\latex\amsmath\amsgen.sty"
> File: amsgen.sty 1999/11/30 v2.0 generic functions
> \@emptytoks=\toks16
> \ex@=\dimen103
> )) ("C:\Program Files (x86)\MiKTeX 2.9\tex\latex\amsmath\amsbsy.sty"
> Package: amsbsy 1999/11/29 v1.2d Bold Symbols
> \pmbraise@=\dimen104
> ) ("C:\Program Files (x86)\MiKTeX 2.9\tex\latex\amsmath\amsopn.sty"
> Package: amsopn 2016/03/08 v2.02 operator names
> )
> \inf@bad=\count87
> LaTeX Info: Redefining \frac on input line 213.
> \uproot@=\count88
> \leftroot@=\count89
> LaTeX Info: Redefining \overline on input line 375.
> \classnum@=\count90
> \DOTSCASE@=\count91
> LaTeX Info: Redefining \ldots on input line 472.
> LaTeX Info: Redefining \dots on input line 475.
> LaTeX Info: Redefining \cdots on input line 596.
> \Mathstrutbox@=\box26
> \strutbox@=\box27
> \big@size=\dimen105
> LaTeX Font Info: Redeclaring font encoding OML on input line 712.
> LaTeX Font Info: Redeclaring font encoding OMS on input line 713.
> \macc@depth=\count92
> \c@MaxMatrixCols=\count93
> \dotsspace@=\muskip10
> \c@parentequation=\count94
> \dspbrk@lvl=\count95
> \tag@help=\toks17
> \row@=\count96
> \column@=\count97
> \maxfields@=\count98
> \andhelp@=\toks18
> \eqnshift@=\dimen106
> \alignsep@=\dimen107
> \tagshift@=\dimen108
> \tagwidth@=\dimen109
> \totwidth@=\dimen110
> \lineht@=\dimen111
> \@envbody=\toks19
> \multlinegap=\skip44
> \multlinetaggap=\skip45
> \mathdisplay@stack=\toks20
> LaTeX Info: Redefining \[ on input line 2817.
> LaTeX Info: Redefining \] on input line 2818.
> ) ("C:\Program Files (x86)\MiKTeX 2.9\tex\generic\babel\babel.sty"
> Package: babel 2017/11/03 3.15 The Babel package
> ("C:\Program Files (x86)\MiKTeX 2.9\tex\generic\babel\switch.def"
> File: switch.def 2017/11/03 3.15 Babel switching mechanism
> ) ("C:\Program Files (x86)\MiKTeX 2.9\tex\latex\babel-english\english.ldf"
> Language: english 2017/06/06 v3.3r English support from the babel system
> ("C:\Program Files (x86)\MiKTeX 2.9\tex\generic\babel\babel.def"
> File: babel.def 2017/11/03 3.15 Babel common definitions
> ("C:\Program Files (x86)\MiKTeX 2.9\tex\generic\babel\switch.def"
> File: switch.def 2017/11/03 3.15 Babel switching mechanism
> )
> \babel@savecnt=\count99
> \U@D=\dimen112
> )
> \l@canadian = a dialect from \language\l@american
> \l@australian = a dialect from \language\l@british
> \l@newzealand = a dialect from \language\l@british
> ))
> No file newfile1.aux.
> \openout1 = `newfile1.aux'.
>
> LaTeX Font Info: Checking defaults for OML/cmm/m/it on input line 9.
> LaTeX Font Info: ... okay on input line 9.
> LaTeX Font Info: Checking defaults for T1/cmr/m/n on input line 9.
> LaTeX Font Info: ... okay on input line 9.
> LaTeX Font Info: Checking defaults for OT1/cmr/m/n on input line 9.
> LaTeX Font Info: ... okay on input line 9.
> LaTeX Font Info: Checking defaults for OMS/cmsy/m/n on input line 9.
> LaTeX Font Info: ... okay on input line 9.
> LaTeX Font Info: Checking defaults for OMX/cmex/m/n on input line 9.
> LaTeX Font Info: ... okay on input line 9.
> LaTeX Font Info: Checking defaults for U/cmr/m/n on input line 9.
> LaTeX Font Info: ... okay on input line 9.
> [1
>
> {C:/Users/NAIMA/AppData/Local/MiKTeX/2.9/pdftex/config/pdftex.map}]
> (newfile1.a
> ux) )
> Here is how much of TeX's memory you used:
> 1343 strings out of 493312
> 16554 string characters out of 3136308
> 80376 words of memory out of 3000000
> 4939 multiletter control sequences out of 15000+200000
> 4094 words of font info for 16 fonts, out of 3000000 for 9000
> 1141 hyphenation exceptions out of 8191
> 27i,4n,23p,224b,111s stack positions out of 5000i,500n,10000p,200000b,50000s
> <C:/Program Files (x86)/MiKTeX 2.9/fonts/type1/public/amsfonts/cm/cmex10.p
> fb><C:/Program Files (x86)/MiKTeX
> 2.9/fonts/type1/public/amsfonts/cm/cmr10.pfb>
> Output written on newfile1.pdf (1 page, 19320 bytes).
> PDF statistics:
> 14 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)
> On Feb 16, 2018, at 5:49 AM, Daniel Kian Mc Kiernan
> <daniel....@oeconomist.com> wrote:
>
> [I don't know why this person posts this query repeatedly, without apparently
> reading any of the responses. I have CC'd this message to him, but his
> handler or server may be configured such that everything is going into the
> spam bucket.]
>
> There have been repeated responses to your query posted to the LyX user
> mailing list.
>
> Be sure to subscriber to the list! If you post a query to this list, the
> answers may also be posted to this list and not necessarily CC'd to you. To
> subscriber to this list, send a blank e.mail message to
>
> lyx-users-subscr...@lists.lyx.org
>
> On 02/16/2018 02:21 AM, elloh van wrote:
>>
>> Dear Sir/Madam,
>> I have just installed LyX version 2.2.3 Windows version on my laptop but
>> when I wanted to see my output in other formats, i. e., View[PDF(pdflatex)],
>> the pdflatex gives the following error message:
>> "LyX: LaTeX failed
>> the external program pdflatex finished with an error.
>> It is recommended you fix the cause of external progam's error (check the
>> logs)".
>> Please what should I do to overcome the problem ?
>> Hope to hearing from you soon.
>> Thank you
>> With kind regards
>> Van Wellington Elloh
>> Department of Physics,
>> University of Petroleum
>> and Energy Studies (UPES),
>> Dehradun, India.
>> Mobile: +91 976 086 2091
>> e-mail: ell...@yahoo.com
