I upgraded my 655 to firmware 1.32NA from version 1.21 and noticed that I could not upload my config file after giving me an error. I entered into the Wireless configuration and started to manually enter the configuration and then when I went to save the settings I would get the error 'Can not use a multicast MAC address in WDS'. The only actual item that it let me change successfully was turning the radio off. After that though if I enter to enable it I get the same error again.
So after trying many different options and following some posts out there about this the problem still persists.