I will play without most mods. Two that I know of are cleared by their modder and one is vital to my Sim. Road to Fame, Erik is a Global Superstar at this moment in time. I really don't wish to walk away allowing his albums to go into the ether. Not enough time for him to go back and start all over again. So, I'll keep the hot fix for MCCC and Road to Fame but remove everything else. This is so very frustrating. I have already lost the save I was working off of and rolled back to an earlier moment to get started again, without taking a year to get back to where my Sims are at this moment in time. Oi. I play this game to relax, too. I'm not even close to that state of mind at the moment. This will certainly aggravate the condition I have been blessed with that took six months to 'resolve' for the time, too.
As for what happens when I attempt to save, it states the game is still loading so saving can't happen. The keys are grayed out, too. Can't save, can't travel, can't build, can't use the Gallery, can't click on the shopping cart, can't go into map mode --- they are all grayed out. No error code that I noticed.