Re: sims 3 there was an error during startup please see the log for more details

I also have to add, it took a few seconds to start up - I didn't think it worked at first but after about 10 seconds it started.

my file was already named TS3.exe and I am getting the same error message.

i had this same problem, no solutions worked. then i discovered the problem is in the registry! the base game entry in the registry is pointing to the wrong location! i also recommend you note down the location that it thinks its in becuz your update files will probably be there and you'll have to move them manually!

i think the update patcher does this if your game is installed anywhere other than the default location which is C:\Program Files (x86)\Electronic Arts\Sims 3 if i remember correctly

incase you dont know or forgot

• Expand the HKEY_LOCAL_MACHINE folder.
• Expand the SOFTWARE folder.
  • For 64-bit systems, expand Wow6432Node
• Expand the Electronic Arts folder.
• Expand the Sims folder.

i cant find TS3.ex_            😞help😞

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Found the TS3.ex_ and simply changed that to TS3.exe

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I don't have TS3.ex_ I just have TS3 and TS3W what do I do now?

This fixed this error for me:

Basically, delete old reg entries in regedit which could be left over from having the game installed previously etc.

I had to delete some from an expansion I had installed before but not anymore.

EDIT (crin): Video removed. Links to videos of that channel or site are against the tos

What am I supposed to do after I expand these folders in the registry?

I cant even find this file, none of them name TS3.ex_ either.

If,on the other hand, everything you have done DO NOT apply to your game like I happened to do,PLEASE RE-INSTALL THE LATEST UPDATE.,VERSION 1.64
This will fix almost everything.Have a good day,and enjoy playing!

Found a possible fix! I tried everything in this thread and had no luck - until I looked through the registry more thoroughly. If anyone sees this and nothing has helped: there may be more folders with the same name that has extra packs in them, only they won't be in the same sub folders so they're easy to miss. What I did was uninstall all packs + the base game, then I went into the registry and deleted the folders as described earlier in the thread. After that I scrolled down further and found another folder named "sims" where one pack remained, so I deleted that as well. I also went into Origin Games and deleted one expansion pack that had 'dd' in the name, BUT!, before I did any of this I made sure to export/copy the folders to my desktop (right-click, chose the export option, name file and save) so I had backups just in case. I would advise you to do the same. Now the launcher starts for me just fine 🙂

Literally none of these solutions have worked for me :'( 
Done everything on this thread, including clearing the registry of anything sims3 related before re-installing etc. 
I still get this Error message. No idea why, because it worked fine a few months ago. 
Log is completely blank......
HELP :'( 
My sims4 has done the same as well, not sure if it's related...

@y6o539nsfr4  Since this error is affecting multiple games, this is likely a system issue.  So it would be helpful if you could run a dxdiag and attach the results to a post here.  That will show information about a lot of potential problems at once.

https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/