I am having this same issue on my second account, except my error message is “An unexpected error has occurred. Exiting FINAL FANTASY XIV. (17)” I have deleted the data from My Documents > My Games > FINAL FANTASY XIV - A Realm Reborn. Doing this changed nothing. This started today when I ported into the North Shroud and I cannot get past the loading screen, but my character does get logged in. I also have access to another character on the same account and it works just fine.