[MAC] Sims 3 Into the Future Application Startup Failed

Hi

If you are already at patch 1.66, you may not really need to update further. Patch 1.67 was a tiny patch, which just fixed one message in the Launcher screen, as far as I know. It may not be worth the effort. Having said that, if you really do want to patch then the superpatch should work - make sure you use the Mac version not the PC version and choose the right one for your region.

Regarding uninstalling and reinstalling, you mention you have already done this so I wonder whether you did so using the clean method? When you uninstall TS3 games on your Mac using the uninstaller, the game leaves behind stray files and isn't completely removed from your computer. These files may conflict with future installations. It is best to completely remove them. BluebellFlora's website provides a guide on how to do this:

http://bluebellflora.com/the-sims-3-on-a-mac/how-to-do-a-clean-uninstall-and-reinstall-on-a-mac/

However since reinstalling takes so long, you might first want to try this quick method to test a freshly generated game folder. Follow the steps under "primary things to try first" in the main Mac help thread:

http://answers.ea.com/t5/The-Sims-3/Links-to-Mac-help-threads-and-guides/m-p/749664#U749664

Caspin