Yeah same here. I have no idea why MO can't launch SKSE. Previously I'm using NMM but realize the way it handle mod is not as efficient as MO. Then I uninstall Skyrim, install MO and import from NMM before get rid of it. Everything went smooth. The STEP guide, ENB, FNIS Launcher, TES5edit etc. But on the very last step, to actually test/play the game after working on it for 2 days, MO can't launch SKSE. I can accept complicated,common things like CTD, freeze screen. But a simple program launch... probably I overestimate myself hahaha.