Solved
Sims 3 won't finish downloading on Macbook Pro
So I downloaded Sims 3 on my Macbook Pro 2015 and I click to finalise the download and then a popup comes up saying: An unexpected installation error has occurred. First, try restarting your comput...
@hannahlorraine1 Does your Mac run Catalina? If so, that's the issue: Sims 3 is a 32-bit app, and Catalina is 64-bit only. There's no way around this issue. However, EA has announced a 64-bit compatible version of TS3 for macOS, to be released (hopefully) some time this year. More details are here:
For now, your only options are to play on another computer, to install Windows alongside macOS (via Bootcamp or Parallels), or to install Mojave onto an external hard drive or USB and boot into that when you want to play. For the last option, you'd need at least temporary access to a Mac that hadn't been updated to Catalina. Let me know if you want more information about any of these options.
