hi molvere, welcome to the forum!
When I tried to load the construction kit (To see what was going on in case it's script related). I got all sorts of messages about 'clouds' and 'sky' .... etc
missing and then the CS crashes or (although cleanly) or hangs forever trying to load.
as long as you're not actively modding the game you don't need the CS.
Nehrim can have its issues but the crashes are not script related
The game seems to start OK but it crashes frequently occasionally needing to resort to Task manager to kill it.
Oblivion (/Nehrim) can't make full use of your system because of it's age (the "4gb patch" is applied though).
try to en-/disable "ENBoost" and "Walk Blessed" in the Launcher settings - some systems just work better with these options than others.
if that doesn't help maybe dial back some of you graphic settings if you're on max settings
(you shouldn't need to play on medium either, just maybe adjust a little)
I also ran into a problems when I tried a quest. Something went wrong and the quest didn't complete so I tried to
use the console to terminate it (ShowQuestTargets... CompleteQuest NQ00Meirre ) Despite this ( and every other alternative that I tried)
I couldn't get it to terminate and had to exit from the console .... Save, reload, continue didn't help
do you have a save from before starting the quest?
or before entering any commands? what exactly happened?
if you can upload a save we'll see if we can get you on track again
(saves should be found in [
...\GOG Galaxy\Games\Nehrim At Fate's Edge GOG\Saves]
we strongly(!) advise against using commands in Nehrim and Enderal since it's super easy to break your quests that way.
(sometimes beyond repair)