If your game is already updated to AE, do not worry. You do not need to re-purchase or re-download an old version of the game. The community has created an ingenious tool called the available on Nexus Mods. It works by taking your 1.6.x SkyrimSE.exe, bink2w64.dll, and steam_api64.dll and patching them back to their 1.5.97 versions.
The Unofficial Skyrim Special Edition Patch (USSEP) is a community-created compatibility and bug-fix mod that aims to correct hundreds to thousands of bugs left unfixed by Skyrim Special Edition (SSE) and its official patches, as well as issues introduced by DLC or other mods. Version 1.5.97 refers to a specific release of the USSEP built against Bethesda’s SSE 1.5.97 runtime (the game executable and official patch level that mod authors target). This ensures the patch addresses issues and scripting behaviors as they exist in that official game build. Unofficial Skyrim Special Edition Patch 1.5.97
: By staying on 1.5.97, users isolate their heavily modified load orders from future Steam updates that would otherwise break their game. How to Safely Source USSEP 4.2.5b If your game is already updated to AE, do not worry
For a long time, Skyrim SSE’s executable (SkyrimSE.exe) hovered around version 1.5.x. Mods, especially (Skyrim Script Extender), were stable. Then, in November 2021, Bethesda released the Anniversary Edition (AE) update, bumping the game to version 1.6.x. It works by taking your 1
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In November 2021, Bethesda released the 10th Anniversary Edition update (version 1.6+). This update upgraded the game's compiler from Visual Studio 2015 to Visual Studio 2019. While this sounded like a minor technical change, it completely broke and every plugin dependent on it.
Crash on the main menu before the logo appears.