I have read your many responses, that also. If you suggest moving Skyrim SE outside Program Files, then i did this before. It didn't help. I have installed SKSE through MO2. I even reinstalled it yestarday. I can launch Skyrim SE from MO2 without a problem, just like launching skse outside the MO2 (from Skyrim SE folder). I just can't run skse from MO2 level (with or without mods).