So after reading some of the helpful tips here, I successfully installed the newest Awesomemod. The game recognizes it, the loading screen actually loads and lets me in to the game, but I keep getting the famous 'Warning: Core mismatch' at the start. And that is weird, since I'm sure I've updated to the latest 2.2 patch, and the launcher agrees with me. So I took out all the possible conflicting mods and only put ones that are guaranteed to be safe, but still the problem persists. And when I tried to save I got the error code 16, which means my game is still oblivious to the patch.
So I tried to patch it again, thrice in fact. The update went smoothly, I didn't get the 'Invalid File Found' warning, the window said the update's done and the launcher shows 2.2. But when I looked at the skuversion.txt, the game version stays at 2.0. I tried to change it myself, that and one that's contained within Default.ini. I also tried changing the ones that are in The Sims 3 Bin but I see no changes.
I can actually go in and play the game though. Haven't experienced any crashes since I played only fifteen minutes the longest. The game worked okay, it's just that I couldn't get the wife to do anything. She was unresponsive to any commands I gave her. She fell to this state after the husband went home from a short trip to Egypt. The said husband and their son were fine though, for now. I'm not sure whether this bug is caused by the game or by the core mismatch, since I read that people also have the same problem as I do (and some cases are worse) so... I'm lost now.
I'm seeking for suggestions here, since I've been dealing with this problem for three days straight with no result. I used Google and Search too FYI.. so I apologize for failing to do so properly.
Thanks in advance. Sorry for the English.