Sims Launcher not installing packs
Just like the title says, the launcher is not installing packs. It loads for a bit, but the installation window never opens, then it unselects the pack that was supposed to install.
Try taking your mods folder out of your "The Sims 3" folder. Sims is only designed to support so many gigabytes of CC so when your .package files exceed that limit, .sim3pack files no longer install. You can simply put your mods folder back into its correct place after instillation with no harm done to your game.