@yahel_1
It took it a long time (my internet speed is horrendous) but it finally finished the repair install. Unfortunately I am still getting the same launcher error.
I also did your suggestion of changing the folder name then trying to start it up after changing it back. Still not working.
Just now I changed the file to 'The Sims 3=' again and i'm re-downloading the base game....with a 4-5hr estimated wait time. Origin is currently downloading its new "The Sims 3" folder it into the Origin Games folder. My original copy of Sims 3 is in the Electronic Arts folder. I tried moving my original "The Sims 3" folder from Electronic Arts to the origin one but then origin would no longer recognize it.
Edit: It finished downloading and I think I've broken something. The launcher still won't open and now I can only play the base game or get an error message saying I need to update with the launcher. An error I had previously fixed. :manfrustrated: