We will be upgrading our AIX 3.2.5 listserv server to AIX 4.1 soon. Is there a need to recompile listerv once we upgrade to AIX 4.1? I tried to copy the executable files found in /usr/local/bin and ~/lsv directories along with the license.merge file, changed the NODE to reflect the new host name, from the listserv server, to a machine running AIX 4.1 but when I tried to start listserv on this machine it says it cannot create listserv.PID. Eric, is it possible to test it this way? Thanks in advance. Abi