Mods disabling themselves

I don't think that my mods are broken, because I just updated them for the latest versions, but in game when I tried to enable them again, it just didn't work. I could click and apply the enabling (and I looked, it was still enabled when I opened the options menu again), but when I closed, then next opened my game, I got the mods disabled pop up. I tried a few times and it happened each time.