Hey so I'm having a problem with installing sims 3 package files. When I go to my launcher and go to downloads I select all and click install. The little window pops up and it's black for a while until the loading bar starts. It basically freezes and then the message: Sims 3 has stopped working: A problem caused the program to stop working correctly... and so on. Then the only option is to click close program. It goes back to the launcher and nothing is installed.

Hm, I have a really bad memory when it comes to certain things.  I’ll try to answer this.  

One of two things could be happening.  The package file could be corrupt, which can happen, or you’re trying to install something that’s not a sims3pack.  Since you press “select all”, it’s harder to troubleshoot.  What I would suggest is that you install them individually to try and pinpoint the bad one.   Once you are able to find the bad one, you can delete it and try redownloading it and reinstall.  If that doesn’t work, then unfortunately there’s nothing you can do.

If what you are trying to install is not a sims3pack, then you’re outta luck there; .packages go into your Mods folder, whereas sims3packs are done via launcher.  If you attempt to install something like a sims2pack (can happen), then you may end up crashing the installer.

So I’d try checking them individually first.  If you have a lot of CC this may take a bit, but it’ll at least help in finding the problem CC.  

Hope I explained it well! Stay Classy <3