Is there such a program where I can remove or check all hacks at once ? I have so many and im not sure what folder there in, I have many folders (arranged by date) in my downloads folder .... ARGH !!!
This may be part of your problem. As jsalemi noted, Clean Installer will check for hack conflicts. However, if you have a lot of old non-BV stuff, it may highlight pretty much everything in red anyway.
If this is the case, I would remove ALL your hacks from all sub-folders in your downloads folder (note: hacks and mods, not clothing. If you remove clothing, when you test your hood, your sims will lose any custom clothing they might have in their wardrobes). You do not need a special program to remove hacks - simply move them out of your downloads directory using Windows Explorer (you can put them in a temp directory if you like or back them up somewhere).
Do not add back in any of your hacks or mods that date from before September 2007 - these will likely NOT be compatible with BV and have the potential to screw up your game.
DO get the latest updated hacks from here - look in:
http://www.moreawesomethanyou.com/ffs/index.php?dir=bv%2Fhacks%2FAdd in any others from other sites carefully, but check those sites to ensure you get the latest BV compatible version, or avoid them altogether. If you continue to play with non-BV hacks installed, you will continue to experience problems.