Re: Sims 3 stuck on 'finalizing'
@AndiV24 The issue isn't University, it's Late Night. Or at least, one of the issues is Late Night. You might need to uninstall the whole game and reinstall from scratch, but perhaps there's a shortcut. Reset Origin first:
https://help.ea.com/en-us/help/origin/origin/how-to-reset-origin-on-mac/
Reinstall University Life, then run the Super Patch (digital download version) to manually patch the game, even if you've done so already.
https://bluebellflora.com/sims-3-manual-super-patch-for-mac-1-67/
Next, create an alias (icon) for Late Night in Applications > The Sims 3, alongside the icons for the other packs:
https://bluebellflora.com/sims-3-packs-not-showing-as-installed/
If the only issue is that Late Night doesn't already have an alias, then this may be enough to get past the error. If this doesn't help though, please post the full specs of your Mac, as described here: