"An unexpected error has occurred. Exiting FINAL FANTASY XIV: A Realm Reborn.(2)(17)"

This is the error report that pops up every time the client crashes. Before the Maintenance I was able to log into the game and get on fairly smoothly. Sometimes the game would crash from lag or other reasons (2002), but it never did this.

I log in, press "Play", the client opens and loads to the main menu, I press "start", choose my character, log in, goes to loading screen where it will crash most of the time.

Sometimes the crash occurs in the character selection screen. Sometimes I will get in the game but have it not loaded completely, then crash.

I tried changing from Borderless Windowed to Fullscreen and that makes it crash too.

What is going on? Why is this happening? It seems like the Maintenance made things worse for me.