If you update your Skyrim SE past v1.6.640 (e.g., to v1.6.1130 or v1.6.1170), many mods marked "verified for 1.6.640" will break until the mod author releases an update.
For many PC players, 1.6.640 is considered a "stable" version for long-term play. When Bethesda releases newer updates (like the December 2023 "Creations" update), they often break and DLL-based mods. skyrim special edition 16640 verified
: The vast majority of modern mods on Nexus Mods were built or updated specifically for 1.6.640. If you update your Skyrim SE past v1