I had the same trouble. I got around it by manually creating a user in the database after the install script got stuck with last_login. By adding myself as an admin manually and setting my user type to "2", I was able to try it out.

However, I ran into some other database related issues before scrapping the whole install. All this trouble was with 2.3.5. Then I tried 2.3.4 and it did the trick. I've had no issues at all. The forum works superbly.

I hope this helps other users.

My install is an internal forum, so I cannot post links here.