In , add a new tool on the dashboard and point it to the skse64_loader.exe . Set it as Primary .
Although SkyUI itself is not a DLL mod, its MCM (Mod Configuration Menu) relies heavily on SKSE’s extended UI functions. With SKSE 1.6.640, SkyUI functions without issue, but third-party MCM add-ons needed updates due to a change in how UICallback handles strings. skyrim skse 1.6.640