[texhax] Distress call

[Martin Schröder]

2007/8/12, Dr. Friedrich Katscher <dr.katscher.vienna at chello.at>:
> I have the LaTex text, the DVI and the PDF stored on two USB sticks but
> unfortunately I did not update it every day but for the last time about four
> weeks ago (in the future I will be more prudent), and all my work I did in
> the meantime seems to be lost!!!

[...]

> Now when I click on the icon LaTex I read in the black box:
>
> !Undefined control sequence.
> 1.1427. \begin<quote|> 1\underarc3 be equal 6\underarc3... (That is, I have
> to arcs in line 1427.)
>
> Am I right that if I delete all \underarcs in my text my file would be in
> order again? But I have so many that it is hopeless.

First: Calm down. :-)

Before you delete anything in your source text, make a copy of it.

I've never used \underarc, but a quick search on google points to the
arcs package (http://www.ctan.org/tex-archive/macros/latex/contrib/arcs/).
Did you somehow loose the \usepackage{arcs}?

Best
   Martin