I am getting an error using the script altavista.cgi ...

This is the error I am getting:

Error: No results available.

In the error log I am getting this error:

Warning: Use of "-z" without parens is ambiguous at CGI.pl line 136.

Is CGI.pl a perl module that the script is using? Is this part of libwww? I have libwww modules installed but I am not sure it is the most current?

Can anyone help me?

Thanks in advance,
elms