It appears that once a new patch is released, many users have issues.  That’s understandable.  However, for the most part these issues are game-breaking, giving players an Error 16 Code in which they are not able to save their games.  Luckily for me, I do not have this issue (I played awhile this morning and was able to save with no hiccups).  But explain that to the dozens of fans on this site and over at the official forums.

Until we can get an official word from EA, I’m not exactly sure what you should do.  A crafty Sims 3 player came up with the following work-around in this thread for those who installed the patch:

First off I want to remind everyone to backup before you boot up any new patch/ep

Secondly if you do get error code 16 and dont have a backup, dont panic.
Go to your sims 3 save file which for windows users is in the documents file.
Delete the two files that are actual files (one will be a .bad file). then rename your .sims3.legacy file to .sims3 and you are good to go.

To prevent this error (hopefully wont be needed for long), instead of simply saving you need to “save as”. *edited*

I doubt this will solve everyones problems, but if you have anymore workarounds post them.

You may want to hold off downloading it until a representative from the Sims Team posts a note at the official site.  I’ll keep my eye out.  Oh, and if you are getting the famous ‘Invalid File’ error, you need to restore any .ini file and remove any mods you may of downloaded – they conflict.