DO NOT SELECT REPAIR. DO NOT.
This will re-install the entire game from scratch. Now I have to wait 3-4 hours while the whole game re-downloads and re-installs. Thanks, ESO support, for suggesting this solution that doesn't work.
For those of you that have NOT done this, please try going to your local install location, and finding this folder "The Elder Scrolls Online\game\client". Specifically, you want eso.exe. I couldn't tell you the default location as I changed mine personally. Launching that file avoided the complete re-download of the game you might be experiencing.
As shown above, please try this first, as some have reported repairing completely rewrites the directory and forces a re-download of the ENTIRE 23gb client.