Dine Out: Broken pack with lost potential?

I don't have that many issues with Dine Out in my game, I have quite a lot of restaurants and they run fine except one I downloaded that appears to work but my sims never get served in it, so I'm thinking there is some issue with the lot. I rarely play as the manager and would have liked if we could play as a chef at a restaurant. One funny glitch that happened din my game once when playing as a manager, I hired a young lady as a cook but an old man showed up for work instead of her. He had the name of the lady I hired, he even did the trainings I paid for him to do. Eventually I fired him and when I rehired the young lady the right sim showed up for work.