Q:
Crashing on Open
A:
Delete the file %appdata%/Guild Wars 2/GFXSettings.Gw2.exe.xml and try starting the game. Did it work?
If not, delete the folder %appdata%/Guild Wars 2/ and the file
Documents/Guild Wars 2/Local.dat. This will clear your local settings.
Thank you !! i had the same problem, now it works
Thank you Healix, this has fixed my problem.