Find that mod in your Mod Manager. Check its Nexus Mods page to ensure you downloaded the version compiled specifically for AE 1.6.640 . If the mod has only an old "SE" version (pre-2021) or a brand new "latest AE" version, it will crash your game unless you find the specific historical file under the "Old Files" tab on Nexus. If you need help building out your list, tell me:
Before November 2021, the vast majority of mods were built for and its associated SKSE. The Anniversary Edition update was not a new game but a major patch that updated the game's executable (the .exe file) to a new series of versions, starting with 1.6.x. This change broke many SKSE plugins, which are often .dll files that are written to work with a specific game version. skyrim+skse+16640+2021
Bethesda released to celebrate the game's 10th birthday. This was not just a simple patch; it was a significant backend update that upgraded the game from version 1.5.97 (the "Special Edition" standard for years) to version 1.6.317 (initial release), which was quickly followed by hotfixes, eventually culminating in the widely referenced 1.6.640 patch (released in early 2022 to fix the "black face" bug and other issues). Find that mod in your Mod Manager
The Definitive Guide to Skyrim SKSE 1.6.640 (2021-2022 Era) When it comes to modding The Elder Scrolls V: Skyrim Special Edition , the is the backbone of the modding community. While the game has received numerous updates over the years, the release of the 1.6.640 runtime version in late 2022 (following the 2021 Anniversary Edition rollout) marked a pivotal moment for mod stability. If you need help building out your list,
This update introduced "Creation Club" content integration and, crucially, updated the game's executable engine.