I've been receiving 2 to 3 pages of UI errors periodically since purchasing Summerset a few hours ago. Anyone else? Reloading UI just reloaded the errors.
I had to install that 11GB patch at the same time I prepurchased Summerset, and then after logging in I had several UI errors which I just thought it was due to me having not restarted my console after the install. But then the next day after playing for an hour or so I got a UI error that completely turned the entire interface off. Nothing on screen, menu wouldn't open, couldn't enter the chat or log out, had to force quit the game. All of this is unusual, even for ESO.
I love how they have a Technical Support section that never gets replied to. Uninstalled and reinstalled. Seems to have worked. Thanks for nothing ZOS!