Created Unassigned: NullReferenceException on access to Folders [2639]

Hello,

After I connect and login, I get a NullReferenceException when accessing ImapClient.Folders.
Log from the server session below :

IMAPX1 CAPABILITY

* CAPABILITY IMAP4REV1 X-NETSCAPE LOGIN-REFERRALS AUTH=PLAIN
IMAPX1 OK completed
IMAPX2 LOGIN "username" "password"

IMAPX2 OK [CAPABILITY IMAP4REV1 X-NETSCAPE NAMESPACE MAILBOX-REFERRALS SCAN SORT THREAD=REFERENCES THREAD=ORDEREDSUBJECT MULTIAPPEND] User username authenticated
IMAPX3 LIST "" %

* LIST () "/" Trash
* LIST () "/" INBOX
IMAPX3 OK LIST completed

Any idea ?

Thanks,
Pyt.