Xcode6 Could not parse server's response as a plist

Question

I'm trying to add my apple developer account to Xcode Beta 3 so I can run apps in my iPhone, but unsuccessfully. I go to Xcode -> Preferences -> Accounts -> Add Apple ID. Then I enter my user credentials and press OK. I don't think it's a credential issue because entering an incorrect password tells me that the password was rejected, by entering the correct one shows me this:

Does any one know how to solve this?

Answer 1

Go to appleid.apple.com and remove special character (like e accent "é" ) in your name.