Problem:
Error!

This is pdfTeXk, Version 3.141592-1.40.3 (Web2C 7.5.6)
%&-line parsing enabled.
entering extended mode
(./1204165120_invoice_1.tex
LaTeX2e <2005/12/01>
Babel and hyphenation patterns for english, usenglishmax, dumylang, noh
yphenation, loaded.

! LaTeX Error: File `scrartcl.cls' not found.

Type X to quit or to proceed,
or enter new name. (Default extension: cls)

Enter file name:
! Emergency stop.

l.2 \usepackage
[latin1]{inputenc}^^M
! ==> Fatal error occurred, no output PDF file produced!
Transcript written on 1204165120_invoice_1.log.

Resolution:
apt-get install textex-extra