Hi I fixed the problem by uninstalling warband. I was able to fix it by deleting the warband folder in my steam and in my documents.Afterwards I reinstalled warband and nord invasion. Sorry about wasting your time.^^;
In case you wanted to know.Prior to fixing this problem, I was able to warband normally including its multiplayer. The only other mod I played was crpg, but it constantly freeze,stuttered and crashed.So,I had to force single threading and for large amount of players, I had to use the lowest graphics settings to play it.
I tried to google the problem too,but mostly got historical stuff,because of the term "nord invasion " : P and just videos showing the nord invasion mod. I tried to put loading setting data in quotations,which left me 3 links. 1/3 were relvant google: nord invasion "loading setting data"
AGentofVillainous - YouTube
www.youtube.ug/user/AGentofVillainous
... it crashes even before the main menu, at the "Loading Setting Data" mark. .... That sounds like a Nord curse. .... Like what Warband got with Nord Invasion?
^ I tried to find his comment,but I had to look through pages of it,and couldn't find it.
I also,tried to search this forum,but there only seemed to be only one another person who suffered a client crash,but due to different circumstances.
Anyways,I have played the mod and I think it's great.I hope my reply gives you insight to any possible problems and provides you another solution for players.
Sorry again for any wasted time.