Hi,
I just upgraded to Scrivener 3 and it works fine when I launch from the desktop shortcut, but it does not appear in the Windows 10 start menu. Scrivener 1 launches when I open from the start menu.
I read here that the newest version is supposed to be displayed only:
https://forum.literatureandlatte.com/t/keeping-a-copy-of-scrivener-1/45624/1