core launch failure error.

Hi, I keep receiving "core_launch_failure" error.

I've completely uninstalled my game twice now, due to this error and removed anything that could be conflicting.
I looked up several guides, but I can't seem to find anything that works for me, seeing as some said that the game needs to be completely uninstalled and another said that I have to download EADM, so I'm confused.


I'm sorry if this is a very stupid question, but I'm quite a bit computer stupid. 

Thanks in advance!

EDIT:

It seems that I did something?? and I'm not sure what, because I left it to idle after I received that error and now it gave me an error inside of the launcher saying "Cannot connect to EA download manager".

EDIT 2:

Now I received this gem while trying to launch the game..

Sim Architect wrote:Hi there! Did you follow ALL the steps of the guide below (or the video after it, a bit further below, if you prefer) AND installed AT LEAST one expansion NEWER than Generations before applying the ultimate fix? You are talking about Sims 3, right?

Games4theWorld Install Sims 3

Please let's know if you got it fixed or if you need further assistance.

Hi! Yes, I installed everything and followed the guide step by step. 

I'm currently in the process of reinstalling and trying again.

Hello there,

First of all, you can ignore the "Cannot connect to EA download manager" error. It's nothing important, it just means that the EADM was not found on your PC (since you don't have it installed).

As for the Registration error, that means that you either misplaced the crack, or did not apply it at all. Are you only installing the base game, or also expansion packs?