Hello @ttmarie19,   Yeah, it's a known bug, for unknown reason the settings are not saved.    Here's a workaround: Open Finder, then browse to your Documents folder. Create a folder name "Sims 4 Tray Importer" w/o the quotes. Download Sims4.GameInfos.Settings.zip and extract Sims4.GameInfos.Settings.xml in that folder. Restart S4TI Apply your settings then save the changes. Restart S4TI if needed See if it fix the problem