For me, nothing that I can see. Launching it from a file manager such as total commander I can see a window open and close very quickly. However, it should be noted that if I launch texgen64 itself manually through total commander it opens up as expected but of course can't access the MO2 VFS, though perhaps it can give a clue as to what is going on here.
Edit:
I have repaired vc++ and taken the other steps in the linked guide with no effect.