Try re-installing the game and the new patch. Usually when it says "Feralheart.exe has stopped working" it means the game was either reset (meaning there was a sudden crash) or the server could've been full.
Just one question, if you were able to get into the game and choose your character to log in, did the "Feralheart.exe has stopped working" message popped up on the loading screen? If so then it was just a server reset.