hi, i have a similar problem and have lost nearly all interactions when sitting at a table as well as take picture and scope room when you click on the sim.
i removed all my downloads and the problem went away. But i have soooo many things in my download folder its just a nightmare picking the offending item. I removed my xxxxsims sex hacks and that has restored some but not all.
There's a few things you can do. First, make sure all of your hacks and mods are updated to work with the latest ep you have. You can also download and run the
Hack Conflict Utility (click on Sims 2>Programs and it's the second one on the page). Bear in mind, that it deosn't necessarily tell you which hacks
are conflicting as much as it tells you the ones that have the
potential to conflict. Failing that, you'll have to go about the long way.
The easiest way to do it is split your downloads in half and put them in one group at a time. One group should allow your game to run fine, the other should make it go all wonky. Take the wonky half and divide it in half again and repeat the process until you have found the file(s) messing up your game.
What I do, and I suggest other people do this as well, is keep all of my hack/mods in a subfolder in my Downloads file. That way, if I ever have a problem with one of them, I just have to pull that file out and have a smaller number of files to test.
Also it bears mentioning that it's possible to download a mod or hack without your knowledge, especially if you're in the habit of downloading houses. Sometimes one can be unintentionally package with a house, which is why it's always a good idea to install houses with clean installer so you don't get any surprises.