I've just made a list called TEST.LIST. When I tried to add subscribers, I got the following error:

>>> Error X'0028005B' updating file F:\listserv\main\TEST.LIST <<<

-> Severity: Error

-> Facility: LFxxx routines

-> Abstract: File not opened in update mode

-> I/O mode: Record read + update

This error generally occurs when a list file has been manually inserted into LISTSERV's main directory (e.g., created with vi, etc.) and LISTSERV was not restarted before a command arrived for the list (e.g., an ADD or DELETE command). LISTSERV must be restarted to reformat the plain text file before the list can be used.