Just an FYI: I noticed that even though I selected a minimum password length of 6 characters, the registration page was telling users that their password had to be a minimum of 'seven' characters - written out in alphabetic characters. So I altered the text on line 1601 to read
echo "\n<small>", __("Your password must be at least ".$options["min_password_length"]." characters long. To make your password stronger, use upper and lower case letters, numbers, and the following symbols !@#$%^&*()", "register-plus-redux"), "</small>";
Might be worth addressing in the next update.