[scribus] sla not edited

[Török Árpád]

Hi There!

I am new in the list and with Scribus, too.
My problem, why I ended up with subscribing to the mailing list is that 
I am not able to edit sla file, downloaded from net.

Let's see my concrete problem.
I decided to help to translate some articles from the Ububtu's Full 
Circle magazine.
After downloading issue 64 from: 
https://wiki.ubuntu.com/UbuntuMagazine/TranslateFullCircle?action=AttachFile&do=view&target=issue64.tar.gz,
and decompressing it, I have found in its main directory the issue64.sla 
file.
When opening it, I saw everything well, but all editor tools were inactive.

What is the problem?