Temporarily disable all mods except SKSE, RaceMenu, and its requirements (like SkyUI). If the error disappears, you have a conflict. Re-enable mods in batches until you find the culprit.
: You started Skyrim through Steam or the default launcher instead of the SKSE executable. skyrim racemenu error you are running skse version 0000 link
: The most common cause is launching Skyrim through Steam or the standard SkyrimSE.exe rather than the skse64_loader.exe . Temporarily disable all mods except SKSE, RaceMenu, and
: Your SKSE version must exactly match your Skyrim game version. Temporarily disable all mods except SKSE