Okay, first, I'm no newb with this stuff ... so, got pretty frustrated by repeated attempts to load what had been described as THE total conversion to play. In my installation folder ... no TESV.exe. It DID have SkyrimSE.exe. Tried just renaming that, didn't work. In amongst all this thread was one little bit that said something about copying ... so I did. Copied SKSE.exe right back to the same folder, then renamed to TESV.exe. BINGO! Now ... on to play!