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Specifically designed for Skyrim SE/AE v1.6.353 .
Skyrim updates frequently break SKSE-dependent mods. Because FSMP interacts directly with the game's memory and CPU instructions, even a minor game update renders older versions of the physics engine unusable. This fix is the bridge for players who have chosen to "freeze" their game at version 1.6.353 to maintain mod stability. Skyrim Script Extender (SKSE)
You must have the SKSE version corresponding to 1.6.353 (typically v2.1.5 ). You can verify your version by typing getskseversion in the game console.
is a performance-heavy physics library for Skyrim Special Edition that enables realistic movement for hair, clothing, and body parts. The "1.6.353 Fix" refers to a critical compatibility update for users on the specific version of the game associated with the early "Anniversary Edition" era. Overview of the 1.6.353 Fix
Updates the .dll hooks used by FSMP to ensure the physics engine loads correctly without crashing the game on startup.
This specific fix addresses the "Version Mismatch" error that occurs when the Skyrim Script Extender (SKSE) version does not align with the installed physics plugin.
It is highly recommended to use Mod Organizer 2 or Vortex to install this fix to avoid overwriting base game files and to manage the "Overwrite" folder effectively. Why This Fix is Necessary
The fixed hdtSMP64.dll must be placed in your Data/SKSE/Plugins/ directory.
