[Phpgroupware-developers] trouble instaling

[Marco Viola]

        If  you do not have time to lost with me please say who can help me. I
have this: 

Template Error: filename: file ..//header.inc.php.template does not
exist.
Halted.
Fatal error: Call to a member function on a non-object in
/var/www/html/phpgroupware/phpgwapi/inc/class.Template.inc.php on line
440      

When try to install. What can I do? who can help me? Where I get
information?

Please answer something!