SSO Configuration - Problem

Dear Experts,

i try to configure SAP SSO using this Guide:

How to configure SAP NetWeaver Single Sign-On for SAP GUI for Windows with Kerberos integration

I followed the guide and now i stsuck on point

3. Ceate and Configure the Secure Store Environment (pse.zip) --> on the server

I execute the command

snc crtkeytab –s SAP/Kerberos<SID>@<DOMAIN-IN-UPPER-CASE> -p <PASSWORD-OF-AD-USER>

This command is not working.....

I asked google some times but it will not work. I tried different syntax versions and it will not work. I dont know why.

Any idea what can be wrong?

Best regards,

Klaus