Re: Why won't Sims from The Exchange download into my game

@thankyou4venom  It's always possible that your antivirus software is getting in the way, although if you can download other items, that seems like less of a possibility.  Some people have had success running the game as an administrator (right-click on the icon to show the option).

But I think your best best is reading crinrict's blog post concerning this error.  Depending on the cause of the issue, there are several things you can do to fix it.

https://sims3.crinrict.com/en/2014/02/exchange-content-cannot-be-installed.html