Really... Frontier.ffiV.com/arr_win/ error again?

[Masha]

I'm also having this problem, I've gotten a black screen of death multiple times now.

I have not tried restarting yet, I'm not sure if that'll really do anything or not.

Should I just wait it out or should I just reinstall the whole thing?

I had that exact same message. I cleared my internet cache as kaya_suzumiya said to do. It didn't work immediately but after some more tries it's patching now.