I know I should be, but I've been stupid and not organized all my downloads or anything so I could find all hacks easily, but I try:
You need to use Sims2Pack Clean Installer. Most if not all hacks that change game code are highlighted in red. Select all red items and put them in a HACKS folder within your Downloads folder.
Problem solved.
Pink highlighted items are duplicate files, and unnecessary (can even potentially cause problems in your game), and add to the size of your Downloads folder, which slows game load time.
See also the tutorials at modthesims2.com on how to use binary test loads to isolate problem files, and get Sims2Hack Conflict Detector to track hacks that are fighting with each other.