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For no particular reason that I could identify, I was faced with the impossibility to compile any latex document and invariably got this error message each time I tried :

LaTeX: problems after [0] pages

kpathsea: Running mktexfmt pdflatex.fmt
tcfmgr: config file `' (usually in $TEXMFMAIN/texconfig) not found.
I can't find the format file `pdflatex.fmt'!
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2 Answers 2

up vote 7 down vote accepted

I thought I would post this here because it gave me some cold sweats as I could not make any sens of the errror message and have only two month remaining to write my thesis.

In a terminal, just type

sudo texconfig rehash

which should gives

mktexlsr: Updating /var/lib/texmf/ls-R-TEXMFMAIN...
mktexlsr: Updating /var/lib/texmf/ls-R-TEXLIVE...
mktexlsr: Updating /var/lib/texmf/ls-R...
mktexlsr: Done.

This solution was found on this website.

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This answer led to another question. It is easier and more conventional to simply use sudo texhash. –  Serge Stroobandt Jun 20 '13 at 9:31
Both rehash and texhash produce an analogous output, but I am still returned the same errore message. –  Delio Sep 25 '14 at 13:23

For me I simply had to copy the .fmt file into the directory the PHP file was calling it from. It worked fine from a terminal but gave the error when running via PHP.

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Welcome to TeX.SX! I don't see that this answers the question, which doesn't mention PHP at all. –  Andrew Swann Feb 17 at 16:04
This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post - you can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post. –  Kurt Feb 17 at 16:57
It is the same error I got when running the command via PHP, which is why this question came up during my search. I found, and posted the solution that worked for me in case it helps someone else that has a similar problem. While this user doesn't specify PHP, they also don't say they were using ASP, CFM, .NET, Python, so my solution could be extremely applicable. –  Alan Feb 18 at 16:44

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