When Bethesda released the "Anniversary Edition" update (v1.6.318 to 1.6.640), they updated the game’s compiler and changed how DLL files interface with SKSE. This broke hundreds of essential mods, including:

Choosing 1.5.97 doesn't mean missing out on new content. Thanks to the community-created players can enjoy the engine stability and mod compatibility of 1.5.97 while still "bestowing" their game with the assets from the Anniversary Edition . This hybrid approach allows users to experience the new fishing mechanics and "Saints & Seducers" quests without sacrificing the deep customization that makes Skyrim an eternal masterpiece. 5.97 to run correctly?

This version remained the standard for nearly two years, allowing the modding community to build a massive foundation of highly stable plugins.

In short: .

(essential for detailed crash logs), have never been ported to version 1.6+. Best of Both Worlds

By the time version 1.5.97 was released, Bethesda had ironed out the majority of the engine-level bugs that plagued the 2011 original. This version represents the at its most stable, offering the 64-bit engine’s improved memory management without the "black screen" or plugin-breakage issues that initially accompanied later updates. It provides a clean, reliable canvas for those who want to push the visual limits of the game with ENB presets and 4K textures. The Best of Both Worlds