Connectrix Brocade: firmwaredownload fails due to duplicate Zone members

Switch:admin> firmwaredownload
Server Name or IP Address: XX.XX.XX.XX
User Name: ftpuser
File Name: v9.1.1d_G6_ENTRY
Network Protocol(1-auto-select, 2-FTP, 3-SCP, 4-SFTP, 5-HTTP) [1]: 3
Do you want to input SCP/SFTP options (Y/N) [N]: Y
SCP/SFTP Server Port Number [22]: 
SCP/SFTP StrictHostKeyChecking Enable (Y/N) [N]: N
Verifying if the public key authentication is available. Please wait ...
The public key authentication is not available.
Password: 
Do you want to continue with CRA (Y/N)[N]: Y

Do you accept and agree to the terms outlined in the End User License Agreement(EULA) for this product?
Please respond with (Y/y) to Accept, (N/n) to Not accept, or (D/d) to display the EULA : y

Checking system settings for firmwaredownload...

The following item(s) need to be addressed before downloading the specified firmware:
ERROR: A zone containing duplicate members was detected. Please remove the duplicate entries and try again.
ERROR: "ZoneXYZ" contains duplicate entry "50:xx:xx:xx:xx:xx:xx:xx" (dup_count = 2)

Firmwaredownload failed.