Getting an error when upgrading to SP2 on the mailbox server

Hi all!

When I try to upgrade to SP2 on our Mailbox Server I get the following error:

The following error was generated when "$error.Clear();
          $vdirName = "PowerShell";
          $InternalPowerShellUrl="http://" + $RoleFqdnOrName + "/powershell";
          new-PowerShellVirtualDirectory $vdirName -InternalUrl $InternalPowerShellUrl -DomainController $RoleDomainController -BasicAuthentication:$false -WindowsAuthentication:$false -RequireSSL:$false;
        " was run: "The virtual directory 'PowerShell' already exists under 'XXX-MAIL.domain.com/Default Web Site'.
Parameter name: VirtualDirectoryName".

The virtual directory 'PowerShell' already exists under 'XXX-MAIL.domain.com/Default Web Site'.
Parameter name: VirtualDirectoryName

I have deleted the Action/"Install" and Watermark parameter and restarted the server but the error is still there.  Any tips?

Pittbull