Onkyo TX-NR656 issue

[Poueck]

With my Onkyo TX-NR656 the plugin doesn't work on the "main" zone. I have the following messages on the live log:

error: ONKYO-CONTROL: An error occurred trying to comminicate with the receiver: ERROR (cmd_not_exist) Command power does not exist in zone main
error: ONKYO-CONTROL: An error occurred trying to comminicate with the receiver: ERROR (cmd_not_exist) Command selector does not exist in zone main

If i setup the plugin to control the "zone2" zone, the plugin power on the amplifier and select the input channel on zone2.

Any tips to debug the problem ?