If it is similar to my problem, then after entering account info and the "captcha" it just refreshes as though I had hit F5 with no error messages as to issues with the cpatcha, issues with the password or the account name. I tried variants meeting all the rules I am aware of that are common for these with no result. I eventually had to give up.
Of course, this may be nothing like the above problem, there I go shamelessly leeching attention :s