sims 3 packs keep uninstalling!!!!!!!!!!!!!!!!

[redranger09]

when i install a sims 3 pack it installs but ehrn i close the launcher or play the game it uninstallls it is soooo anoying!!!!!!!!!!!!!!!!!

[Belzader]

Have you checked if item/s is availble in game?
If it is never mind what it show in launcher.