SkyUI error code 1 pops up on every save load

type getskseversion in the console at the main menu. if it says unknown command, skse isn't loaded at all and it's the launcher. also if you're on the anniversary edition build, a lot of skse plugins need Address Library installed or they just fail quietly.

error code 1 is skyui telling you skse isn't running. either you launched through the normal launcher instead of the skse loader, or your skse doesn't match your game version. that happens a lot after a steam update moves the game to a newer build. check the skse version against your game exe version. in mo2 or vortex, make sure the thing you hit play on is skse and not plain skyrim.