Guild Wars 2

After patch Im getting this error after playing for a longer while. I never saw it before and strange is that, after this i can still play on my other characters, exept that one when error appeared. Is it my computer fault or bug in files ?

Well, a thing that could be helpful is repairing your client to make sure that it doesn’t have corrupted files. Info about how to do that is at: https://help.guildwars2.com/entries/28148006-Repairing-the-Game-Client

During repair i get a Fatal Error, so i think i cant do anything with that :/

If you can rename your current file gw2.dat to gw2.dat.old, you can start the client and it will download a fresh copy. (That will obviously take a while.) After, if that works, delete the .old file. If it doesn’t, you might have an actual hard drive issue and might want to get it looked at (or replaced, after saving the files you can).

Good luck.

sounds like you have corrupted sectors on your harddrive and your pc is trying to write to those sectors while youre playing the game. My suggestion would be to get a new one esp if the hdd is old.
Either that or you are running out of room.
could be a ram issue too. you could perform a ram test to see if you have dead ram.