Update 1.6.640 immediately rendered existing versions of SKSE64 and its dependent DLL plugins unusable.
Minor but helpful fixes included making the Teleport Pet spell functional again and ensuring namesake weapons could be enchanted. The Impact on the Modding Community skyrim update 1.6.640
The SKSE team acted quickly, releasing SKSE64 version 2.2.1 specifically to support build 1.6.640. Update 1
Because frequent updates can destabilize complex mod lists, many players chose to use a Downgrade Patcher to revert to version 1.5.97 (the "Gold Standard") or stick specifically to 1.6.640 to maintain compatibility with their favorite mods. Is 1.6.640 Still the Current Version? Because frequent updates can destabilize complex mod lists,
The update fixed regional bugs that prevented players in non-English languages from purchasing specific content like the Nix-Hound pet and horse armor .
It corrected an error where the player's Creation Credit balance would display incorrectly immediately after a purchase (this fix applied to all platforms except Steam).