Ok, i gave up 
I guess if Zubaz and ID couldn't help, than no one can.
By the way, for the record - that's what is written after one clicks on the "submit news" button:
"All news items submitted by Citizens, Apprentices or Master Apprentices must be approved by a moderator before appearing on the front page of WinCustomize.com. Users with an access level of four (Journeyman) or higher may post with out moderation."
So, if that's right, my post should be under moderation but that cannot be true because it is blocked as ID mentioned above (that's the error i'm talking about)
So, please guys, make it clear that citizens cannot even try to post news, it's humiliating to try time after time and getting an unexplained error.
Hope this makes this post a bit more useful,
Thanks anyway for the replies.