Mc creater day 1

When I downloaded MCreator 1.5.4 the first time, it glitched and I had to delete the folder and re download it. I don't know what happened. I tried to make an account but it said I got blacklisted.I tried to make a tool but it was hard, Right near the end of class it crashed so I had to re-install it.

 http://www.pylo.si/mcreator/wiki/index.php?title=Making_new_tools