@chojrak I clear the cache files every time I quit the game, and I reset the whole town every sim Saturday night. And those things don't help.
@bekkasan Yes, you are correct, royalties for each book last for 6 sim weeks. My sims just started week 5, so none of them should have expired. And according to his skill log, his current royalties were supposed to be $6461, for 3 different books, but he only got paid for the last one he wrote. There shouldn't be any tie-over from the old save, because I started them entirely over from the beginning. I did not save the progressed household because it was corrupted.
@mw1525 This sim always uses the same computer. I really don't know what could be causing it. I was hoping it might be a glitch that other players have experienced. If it isn't, then something is definitely wrong with this save. This problem has pretty much killed my desire to keep playing that family, unless it can be fixed. But I'd rather not keep playing them if I'm going to lose them to corruption again.