ayuda urgente

[piero19]

saludos
nesecito ayuda, estoy instalando el php-nuke en mi server (localhost), me sale este error:

Warning:
main(language/lang-.php): failed to open stream: No such file or directory in
C:\web\phpnuke\html\mainfile.php on line 166

Warning:
main(): Failed opening 'language/lang-.php' for inclusion (include_path='.;c:\php4\pear') in
C:\web\phpnuke\html\mainfile.php on line 166

Warning:
get_lang(admin/language/lang-.php): failed to open stream: No such file or directory in
C:\web\phpnuke\html\mainfile.php on line 181

Warning:
get_lang(): Failed opening 'admin/language/lang-.php' for inclusion (include_path='.;c:\php4\pear') in
C:\web\phpnuke\html\mainfile.php on line 181

Warning:
head(themes//theme.php): failed to open stream: No such file or directory in
C:\web\phpnuke\html\header.php on line 31

Warning:
head(): Failed opening 'themes//theme.php' for inclusion (include_path='.;c:\php4\pear') in
C:\web\phpnuke\html\header.php on line 31

Fatal error: Call to undefined function: themeheader() in C:\web\phpnuke\html\header.php on line 47


tengo lo siguiente instalado:
php-nuke ver6.9.0
php ver4.3.3
Apache ver2.0.47
Mysql ver4.0.14

si me pueden ayudar, lo que vi en el manual de instalacion solo se modifica el archivoconfig.php del php-nuke; pero segun noto ahi que el error sale del mainfile.php, que debe modificar ahi, o que esta mal instalado.....gracias