This has happened to me today. First time ever since I bought the game over 2 1/2 years ago. But I get error 30001 with the "Update Patch Files".

I uninstalled the game after three hours of not being able to log on. Now I'm attempting to reinstall the game and it's telling me at several intervals that the patch files have failed with multiple error codes like youre reporting. So yeah It's not my ISP. Sick of people stating it's ISP related. It's not. It's on their servers end. And it's annoying.