Sims 3 start up window on Mac

[ksenichka1001]

I am a bit confused with what happened to all of my expansion and staff packages. Everything works fine (in the game all the packages are present except maybe a few houses) but after I installed an update for my OS X, when I launch Sims 3 Seasons there are quite a few Sims expansion package icons are missing on the bottom of the window. How to make them reappear? Thanks.