I get the following error...

Unable to send or receive messages for the Gmail (chambersagent) account. Header download for the 'Inbox' folder did not complete. The operation was canceled by the user.

Server Response: AUTHENTICATIONFAILED] Invalid credentials (Failure)
Server: 'imap.gmail.com'
Windows Live Mail Error ID: 0x800CCC0F
Protocol: IMAP
Port: 993
Secure(SSL): Yes