There is frequent confusion between "Special Edition" (SE) and "Anniversary Edition" (AE):
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: By 2021 and into the 1.6.640 era, SKSE became remarkably stable. It allows the game to handle complex scripts that the vanilla engine would simply choke on. skyrim+skse+16640+2021
Below is a concise essay on that topic.
: Go to the official skse.silverlock.org website. Look for the "Current Anniversary Edition build" (which supports 1.6.640). Manual Installation : Extract the .7z file. There is frequent confusion between "Special Edition" (SE)
Even if you have SkyrimSE.exe set to 1.6.640, Steam might have downloaded the 1.6.1170 executable into a temporary folder. Or, a mod manager changed your root directory.
For players on version 1.6.640, maintaining a stable load order requires specific technical steps documented by the community: Version Matching : Users must ensure they are using the build specifically labeled for game version 1.6.640. Installation It allows the game to handle complex scripts
Jolene rubbed her eyes. The clock on her monitor read 3:47 AM, but the glow of SSEEdit hadn’t changed in six hours. Outside her Seattle apartment, 2021 was freezing over. Inside, Skyrim Special Edition sat at version 1.6.342—the dreaded "Anniversary Update" that had shattered every SKSE-dependent mod like glass.