Um...can you please edit this post i dont understand what your asking

Why when I go to an object what I want my sim to use why does it keep flashing it is
getting on my nerves could it be a cheat what I have done I would not have put flashing
objects on cos that is not a cheat please help me

You have lost too much memory on your computer,try uninstalling some expansion packs you
dont like to save memory.

When you start your game, after the loading menu thing, there should be a window. Click
'able' or whatever it says.

You maight have just typed it wrong. The bool prop cheat is:
boolProp testingCheatsEnabled true

There is one space between every section.

If you already new this, sorry. I was just trying to help.