Mac: Error with sims 3 "Unknown Error Occurred" (after installing)

[dawnsctme]

Thank you so so much! After trying so many things this worked for me! your instructions were clear and easy to follow. I dis the process with ambitions and fast lane and tried the launch. It was unsuccessful, but then I figured out I was also missing outdoor stuff and fast lane. I repeated the proces with those two as well and it worked! Thank you so much for posting this!

[LoggyDoggy]

I followed all of your instructions precisely and I still get the error.  The only thing I did different was copy the file for both Late Night and Ambitions.

[Spore8422]

Thank you so much, you are a genius.

[azimuth7]

Ok, it worked for me but I was initially confused because there were alias folders of other expansions already there.  I went ahead and copied the full folders of the games that wouldn't run into the Paradise Island folder (The Electronics Arts one at the end of the Transgaming folder path) and it worked.  

The only recommendation I would have for other players would be to go ahead and install all of their current games first, then copy and past their folders as needed.   Initially I did it as I went along and found myself having to go through the process again after installing another expansion pack.  In my case, I had to copy and paste the Ambitions, Generations, and Late Night folders.  The other expansions had aliases already there.

One other thing is that for some reason, High End Loft will not run.  Whenever I click on it, whether I copied the folder or not, I get an error message saying that it has quit unexpectedly.  I suppose I deal with that another day.

Thank you for the solution on the disk error message - I would not have found it on my own.

James

[nlarsencarson]

*ANOTHER SOLUTION FOR UNKNOWN ERROR CODE MAC AIR*

My problem began with generations. After 4 or so months with the game it would stop after 30 minutes, especially if I was editing a sim. For the past 3 days I have spent hour reinstalling and uninstalling origin and the sims 3 base pack plus all of the extensions. I came across the trick of copying the late night expansion pack folder (as seen in the video) and it worker! However, generations and pets didn't work still. What I did next worked! I copied the late night expansion folder and put it in generations c drive folder (again, the video will explain what I'm talking about) and generations launched. Did the same for pets and it worked as well. 

Basically follow the instructions in the video but also put the copy of late night (or whatever one doesn't work for you) and paste the folder in all of the other expansion packs c drive folders, you will probably notice the folder doesn't exist, but now it does and you're good to go. Hope this helps!

[truccieeboo]

I cannot find my Late Night folder when I go into The Electronic Arts folder. Does anyone know how to find it if it's missing?

[vlovessims]

I've been having the same issue, and this still didn't work for me!!! help EA help has been useless for me

[Chanelopey]

Tried everything, uninstalling, clean sweep, reinstalling everything multiple times. This is the only thing that worked.

[thesims3persona]

Hi! 

I have a MacBook Air on macOS Sierra version 10.12.5 (Early 2015). I recently downloaded all of my sims 3 games ( generations, late night, pets, seasons, supernatural, town life stuff) through origin. After hours of downloading and installation, the "unknown error occurred" message came up. I uninstalled everything (even used an uninstaller to get EVERYTHING) and only reinstalled origin and sims 3 base game. It still would not work. Then, just for kicks, I downloaded and installed all my expansions again and did the thing where you copy the suspected game that doesn't work (Late Night) and go through all the steps (applications>sims3>[right click]>show package content> etc. ). I feel like I've tried everything but I'm hoping theres one more thing I could try. 

OH! And if this matters, I didn't buy these games through origin. I bought them all originally for PC and played them for years on a windows computer. I used the registration code to add them to origin. 

Hope you can help

[Bluebellflora]

@vlovessims @truccieeboo

Please read this page about finding the LN folder.