Cache Connectivity Test fails

Hi,

     When I trigger a Cache Connectivity Test on old RWB of our PI Production Server (SAP PI 7.31 SP07)

     I'm getting this result:

     I don't know where the Unknown Component came from but mostly I don't get where is the error or where is stuck the check.

     This is how looks our server on the SLD:

     Any Clue about this kind of Errors?

     We have a SAP PI 7.31 SP07

.

Regards,

Victor Oliva