Hi, again
For my second problem : Render framed in LaTeX.
This is the error log i receive:
This is pdfTeX, Version 3.1415926-1.40.10 (MiKTeX 2.

entering extended mode
(C:/Users/Marcboss/AppData/Local/Temp/scribus_temp_render_yV3844
! Undefined control sequence.
l.2 \documentclass
[a4paper,11pt]{extarticle}
! Undefined control sequence.
l.3 \usepackage
[utf8]{inputenc}
! Undefined control sequence.
l.4 \usepackage
[left=0cm,top=0cm,right=0cm,bottom=0cm,nohead,nofoot]{geome...
! Undefined control sequence.
l.5 \title
{Scribus-Latex-File}
Overfull \hbox (21.19067pt too wide) in paragraph at lines 2--6
[]\tenrm [a4paper,11pt]extarticle [utf8]inputenc [left=0cm,top=0cm,right=0cm,bo
ttom=0cm,nohead,nofoot]geometry|
! Undefined control sequence.
l.7 \usepackage
{amsmath}
! Undefined control sequence.
l.8 \author
{Scribus}
! Undefined control sequence.
l.9 \pagestyle
{empty}
! Undefined control sequence.
l.10 \setlength
{\textwidth}{84.78 pt}
! Undefined control sequence.
l.10 \setlength{\textwidth
}{84.78 pt}
! Undefined control sequence.
l.11 \begin
{document}
! Undefined control sequence.
l.12 \section
*{Introduction}
! Undefined control sequence.
l.13 Votre cadre \LaTeX
fonctionne lorsque vous pouvez lire ce texte !\\
Runaway argument?
Placer des formules est très facile :\\ Clique droit $\Rightarrow $\ETC.
! Paragraph ended before \\ was complete.
<to be read again>
\par
l.23
)
! Emergency stop.
<*> ...pData/Local/Temp/scribus_temp_render_yV3844
! ==> Fatal error occurred, no output PDF file produced!
Transcript written on scribus_temp_render_yV3844.log.
texify: pdftex failed for some reason (see log file).
For me, it's like some garbage pollute the preamble, maybe?
Thanks
La Raison