phpmailer can send email to only one email in cc (carbon copy)

I am using phpmailer 4 (with开发者_StackOverflow php 4.4.9). If I add a second email using the AddCC('email address') function, email is not sent to the second email. If I swipe first and second emails, then which ever is first, the email is sent to that eamil.

Does anyone know if it is bug? I can not really update my PHP or phpMailer as it will break a lot of my code in the update process.

Another slight problem: I changed the from email to a new email address but it still displays the old "name". Example mail->From ="test@yahoo.com"

The sent email is displayed as "Sender Name" , test@yahoo.com. The sender name did not change while I changed the email.