Guild Wars 2

Since today, every time I try to open my Hero panel via the Hero icon or pressing ‘H’ on the keyboard; Guild Wars freezes totally and I have to exit with the Ctrl/Alt/Delete combo. When I open System manager it shows that GW2 is not responding and I then have to end it by clicking the End Task button. Ids there a way to fix this issue?

You may have one or more corrupted files. You can try a -repair of the game client.

http://wiki.guildwars2.com/wiki/Command_line_arguments