Re: Please Help, error problem.
If you just recently upgraded from windows 7 to 10 make sure your graphic drivers are up to date since the change. Also are you using origin?
I found a couple of articles about "there was an error during startup. Please see the Log for more details"
https://forums.thesims.com/en_us/discussion/849286/sims-3-wont-work-on-windows-10
http://sims3.crinrict.com/en/2011/03/error-there-was-an-error-during-startup.html
There is also a older link with some tips on what to do:
http://answers.ea.com/t5/The-Sims-3/FAQ-There-was-an-error-during-Startup/td-p/65390/page/6
let me know if any of this works or if you still have some questions