Archieving the configurations of our switches we have a problem only with Blade Switches CBS3120X-S for HP

This is the Error message:"CM0056 Config fetch failed for S361-NWR-RZ3.gfk.de Cause: CM0204 Could not create DeviceContext for 66 Cause: CM0206 Could not get the config transport implementation for 10.0.5.71 Cause: CM0202 Could not access 10.0.5.71 via SNMP. Action: Check the Read Community string Action: Check if required device packages are available in RME. Action: Check if protocol is supported by device and required device package is installed."

We have installed LMS 3.1 with the latest devices updates. We have verified the community strings and the Software Version s are 12.2(40)EX3 and 12.2(40)EX1.

What could be the error?