Hola, despues de lograr instalarlo y ponerlo en el menu de modulos de mi web cuando pincho sobre "Foro" en vez de abrirsema bien me salen estos mensajes, a que puede ser debido?

Warning: main(): Unable to access ./extension.inc in /home/webcindario/cbcalgeciras/modules/Forum/index.php on line 25

Warning: main(./extension.inc): failed to open stream: No such file or directory in /home/webcindario/cbcalgeciras/modules/Forum/index.php on line 25

Warning: main(): Failed opening './extension.inc' for inclusion (include_path='.') in /home/webcindario/cbcalgeciras/modules/Forum/index.php on line 25

Warning: main(): Unable to access ./common. in /home/webcindario/cbcalgeciras/modules/Forum/index.php on line 26

Warning: main(./common.): failed to open stream: No such file or directory in /home/webcindario/cbcalgeciras/modules/Forum/index.php on line 26

Warning: main(): Failed opening './common.' for inclusion (include_path='.') in /home/webcindario/cbcalgeciras/modules/Forum/index.php on line 26

Fatal error: Call to undefined function: session_pagestart() in /home/webcindario/cbcalgeciras/modules/Forum/index.php on line 31

Tiene pinta que no has subidos todos los archivos, concretamente "extension.inc" no esta subido.