Plugins (.esp/.esm) saved in newer versions of the Creation Kit use a updated file header (version 1.71). Version 1.5.97 of Skyrim expects version 1.70 headers. Loading a newer plugin directly into an older game causes immediate back-end failure or missing data. Step 1: Downloading the Base Creation Kit
Double check your folder structure. Ensure your script source files are in Data\Source\Scripts and not Data\Scripts\Source .
Install it. Steam will place it directly into your Steamapps\common\Skyrim Special Edition folder. Step 2: Downgrade the Creation Kit to Version 1.5.73 creation kit skyrim se 1.5.97
The standard Creation Kit configuration restricts modding capabilities. You must modify the configuration files to allow multiple master files (like loading both Dawnguard and Dragonborn simultaneously) and to read loose game files.
The configuration file is your best friend. Located in Documents\My Games\Skyrim Special Edition\ , the SkyrimEditor.ini must be tweaked for 1.5.97 workflows. Plugins (
: Massive quest and overhaul mods were built specifically for this ecosystem.
Ensure Steam is set to "Only update this game when I launch it" and always launch via SKSE to prevent your 1.5.97 install from being "upgraded" to Anniversary Edition automatically. Conclusion Step 1: Downloading the Base Creation Kit Double
For a more user-friendly approach, the Nexus Mods community has created a tool. Download the "Creation Kit Downgrade Patcher" from Nexus Mods. Save the executable ( .exe ) into your Skyrim SE root folder and run it. Click "Start Patching," and the tool will automatically downgrade your CK to 1.5.73.
The Script Extender ecosystem for 1.5.97 is the most robust and well-documented. Essential Requirements
: Many complex Script Extender (SKSE) plugins were never updated past 1.5.97.
It patches the CK's code to prevent "Out of Memory" crashes when loading the entire Skyrim master file.