Also (this may be a little time consuming, but I have had to do it myself a few times before), it may be time for you to do a little Sims files housekeeping.
You may have to do a manual sweep of your hacks. MTS2 has a great step-by-step guide of this (I believe its under "Game Help").
Basically, you take your hacks and mods and put them all together in their own folder, if they aren't already. Then you take a handful out (place in their own folder and place on your desktop - label A) and start your game. Unfortunately, since your game does work with the conflicting hacks, you would have to go into a lot and test it (preferably with a couple) to see if they can have a child.
If not, take out a second group (label B) and return the first group. Once you have the group that seems to include the culprit hack / mod, you can decipher which one it is by sending a couple hacks back into the "Hacks / Mods" folder in the "Downloads" at a time to weed out the suspected problem. Unfortunately its not a hack that won't allow you to begin the game, but won't allow you to play it correctly so its a little different of a weeding process.
If the group, however, has two of the conflicting hacks in it, you may have to then add them back two at a time. I know, kind of annoying, but it does work.
(Another option is after you have Hacks / Mods in their own folder - you can just "disable" them in the Clean Installer so you don't have to move them:
http://sims2pack.modthesims2.com/ )
Just a helpful hint: I, myself, have Inteenimator, Insimenator together. No problems.
I had to do this with two of my conflicting hacks I had when I had problems with no school bus showing up. I actually went straight to the source (Simlogical) to find out what hacks seemed to conflict with hers. She gave me some hacks to start out with.
This also might work. If you can possibly go through some of your hacks / mods and are able to look up their original page where you downloaded them from, sometimes they will tell you in the beginning what they will conflict with. Some really popular creators have that information included with the download.
Hope that wasn't too confusing and good luck.