Well actually, I didn’t but I had to help an old lady so I just installed it at her PC. Mine will follow when GNOME will be somewhere on par within the neighbourhood of the newest 
Hmm, I imagine you ran the language installer script from the live session? In that case, it may have run out of disk space, not memory. I’ve tested the script many times on a 4GB laptop, and with 2GB of RAM in a VM, and I’ve never seen low memory errors.
Yes indeed I did. I’ve done this a lot of times with multiple Linux Distros so I don’t understand what the problem is? Is this not preferred? Because on the Gecko website
it says specifically that:
“How to Install non-English LanguagesRun the “Language Installer” icon on the desktop or in the applications menu, --or-- run language-installer.sh from a terminal.”
I have a suspicion… This is a Live session, so this language downloading is for that live session. So that language is for IN that Live session and that’s not the same. I think I understand. After installing the English, I can press the “Download languages” button 
However, is it possible that the installation has not gone well or maybe corrupt because of the lack of memory?
Yes unfortunately, the installer can’t activate automatic login, since openSUSE uses a non-standard way of configuring the login process. It’s fairly easy to configure though. Just set the DISPLAYMANAGER_AUTOLOGIN value with the YaST /etc/sysconfig editor.
Ok, good to know. I’ll refrain from that from now on 
I imagine this is the Cinnamon edition? If so, you should just leave the password as blank the first time it asks you to set it, and it won’t bother you anymore.
Nop, GNOME of course since it’s the best and most beautiful! No stop, no discussion, I know in the Linux world this could start WW3 
Right, the language installer script isn’t capable of setting the default language, only downloading the language packs. Please use the YaST “Language” Tool for that. Then also change the language in the LightDM login manager and login twice for changes to take effect (LightDM bug).
Ok. But really LightDM or is twice in GNOME also ok?
Anyway, thanks for all the answers until now. Again and again I find the help one can get in the Linux community VERY impressive!!
Last thing. There is something wrong with the direction of the message thread in the email response:
https://forums.opensuse.org/showthread.php/522837-How-can-I-test-a-computer-without-a-live-DVD-USB?goto=newpost
This is from the email and it directs to a non-existing something…