PMP450m Link Capactity Test error

Hi experts,

I try to do a Link Capacity Test in several SMs but the result is the same error:

Error: Failed to receive the handshake from the remote device.
 
Then I try to do it in the AP and does not finish. The message is:
Test in progress...
 

I tried to reboot a SM and try again with the same error.

Any idea?

Thanks.

Regards.

Are the SMs in session when attempting to do the Link Test?  Can you provide a screenshot of the AP Session Status page?