sqlps warning spam

Hi everyone.

SQL10.50.2500

I start sql server powershell console (Right click on Object explorer server node:Start Powershell) "sqlps.exe". When it initialize, and when i try to execute any command, i receive warning (inside console i mean).

WARNING: Could not obtain SQL Server Service information. An attempt to connect
 to WMI on '**********' failed with the following error: An exception occurred
 in SMO while trying to manage a service. --> Failed to retrieve data for this
request. --> Invalid class