Re: I can't seem to play The Sims[TM] 3 due to a serious error.
@denny072802 When you say you can't delete screenshots or your previous saves, what do you mean? That deleting them does nothing, or that it throws an error when you try? The latter, along with the serious error message, suggests that the permissions on your Sims 3 game folder (the one in Documents) are preventing the game from writing to that folder. This folder holds all user data—saves, store and custom content, installed worlds, saved sims and lots, etc. If the game can't reach it, then no wonder you can't load a save.
The fastest way to restore the proper permissions, provided there's nothing weird about your system setup overall, is to delete the Electronic Arts folder from Documents. If you have anything in that folder you want to keep, including TS3 saves, move it to your desktop. Then launch TS3 and load a new save, just to test. Play a few minutes, save, quit, restart your computer, and launch the game again to make sure you can still load the save. If it works, you can move your other saves, along with the rest of the content you want to keep, from your old TS3 folder to your new one. Here's a list of all the files in that folder:
https://sims3.crinrict.com/en/2011/01/faq-user-files.html
If this process goes wrong somewhere, please let me know exactly what you see, including any error messages.