errore inserimento nuovi prodotti

[marince]

Salve, non riesco a capire perché mi da' questo errore:

Warning: glob() expects parameter 2 to be long, string given in /mnt/web8/31/48/51729348/htdocs/catalog/admin/includes/reset_meta_cache.php on line 36

Warning: Invalid argument supplied for foreach() in /mnt/web8/31/48/51729348/htdocs/catalog/admin/includes/reset_meta_cache.php on line 36

Warning: Cannot modify header information - headers already sent by (output started at /mnt/web8/31/48/51729348/htdocs/catalog/admin/includes/reset_meta_cache.php:36) in /mnt/web8/31/48/51729348/htdocs/catalog/admin/includes/functions/general.php on line 109

quando inserisco una nuova categoria o prodotto.
Potete darmi una mano?
grazie