when I make split of rows excel me exits this error:

Creating file EPA_Split 1.txt ...
Warning: fopen(DIR_FS_DOCUMENT_ROOTtemp/EPA_Split1.txt) [function.fopen]: failed to open stream: No such file or directory in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 608

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 609

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617

Warning: fwrite(): supplied argument is not a valid stream resource in /web/htdocs/www.12v.it/home/admin/easypopulate.php on line 617
ecc. ecc.


where the setting of function.fopen resides?