Game crashes after hitting OKAY on the Maintenance notice

FFXIV was working fine yesterday, but today it crashes. I log in as usual and hit PLAY. Then it shows me this new All Worlds Maintenance (Mar. 2) notice and I hit OKAY. The client shows up black and a moment later, it says "FFXIV: A Realm Reborn Has Stopped Working." and I hit "Close The Program." I copied this info from the error message. Has anyone encountered this?

Problem Event Name: APPCRASH
Application Name: ffxiv.exe
Application Version: 1.0.0.0
Application Timestamp: 530ad37c
Fault Module Name: nvd3dum.dll
Fault Module Version: 9.18.13.3221
Fault Module Timestamp: 52b324bd
Exception Code: c0000005
Exception Offset: 00685b2a

Fixed! It turns out it was the overlay.