Matte you saved me.
Thank you for your help.
For anyone else with the same problem:
If you have previously installed Snapdrive on your system, you have to uninstall it and remove Snapdrive folder from C:\Windows\System32\WindowsPowerShell\v1.0\Modules.
One rebooted the system, you can point the following folder "C:\Program Files\NetApp\SnapCenter\SnapCenter Plug-in for Microsoft Windows" and executethe import-module snapdrive.