At this time i have my bot setup:
notice that i do not have lower case… it does not matter… as it only matters to what you have the username set too… if you have uppercase when you signed up the bot then that is what you need to use… check the confirmation email that will let you know what the case’s are.
you may also look at the following:
http://www.teamfortress.tv/15763/how-to-create-a-twitch-chat-bot-using-mirc
i just found this and might assist you with looking at the troubles logging in.
Make sure to use the full code that was provided for oauth code.
Hope this helps