my household keeps getting deleted.. saves corrupted???

Hi guys, I’ve been trying to solve this issue all day, and I seriously don’t know what could be causing it. 

Earlier today, when I was playing the game, I aged up my newborn Sim and held Shift on him to modify him in CAS. However, instead of seeing my whole family, a randomly generated Sim appeared (like I had just started a new game). When I exited Create-a-Sim, the entire household was completely gone. Whenever I hovered my mouse over their lot, it would glitch and get filled in by their neighbors.

I tried going into my save file, and I was able to get them back, but it happened again when I entered Manage Worlds. The entire household would just disappear.

So, I assumed it was my mods, and I removed my entire Mods folder. This allowed me to use the Shift + CAS cheat with my household still there. After figuring out that the issue was caused by one of my mods, I downloaded the Better Exceptions mod and deleted all of my corrupted mods, ONLY FOR MY GAME TO DELETE MY HOUSEHOLD AGAIN.

I’ve been dealing with this for seven hours. Someone please help me!