Hi people, we have an error when we send email to the list

here is the error:

Serious error occurred - traceback follows
------------------------------------------
 >>> Error X'00000011' opening file e:\LISTSERV\MAIN\PALABRADEDIOS.LIST <<<
-> Severity: Warning
-> Facility: Generic error codes
-> Abstract: File/major entity not found
-> I/O mode: Record read
 >>> Error X'00000011' processing list header for PALABRADEDIOS <<<
-> Severity: Warning
-> Facility: Generic error codes
-> Abstract: File/major entity not found

also, we work with win2003 and listserv 14.5

best regards