Re: No Sims 3.app or folder (Mac)
@neuroticnelly I've split your post into its own thread, since the other thread was quite old and in the PC tech section.
The Sims 3 folder and its contents don't turn up in a search, so you need to manually open the folder instead. Open Documents\Electronic Arts\The Sims 3, and DCCache should be in there.
The Sims 3.app is installed into the user Applications folder by default. Open a Finder window, click Macintosh HD (or whatever you've named your hard disk), then Users > your username > Applications. Hit cmd-shift-. (period) to show hidden files and folders, and the Sims 3.app should be there. If you don't see your hard disk in the left panel of the Finder window, click Finder in the upper left corner of your screen, then Preferences > Sidebar, and check the box next to hard disks.
Having said that, the issue in your screenshot is this:
I've moved your other post to that thread; this is a known issue that EA is working to address. You can keep an eye on that thread for updates.