OS Golden Gate Beta startup issues

So, I have deleted all mods and things out of my folders. I have the beta operating system of OS 27 Golden Gate, and am having issues with the game loading. The EA App works fine, I get to the Sims 3 launcher thing where it shows the old launch screen. When I press to launch, it think for a literal second and this pop up happens. I have tried repairing the game, I have uninstalled and redownloaded it, but the pop up is still happening.