Hello Turgut We have been using listserv 1.8c with cms 13 in a 66meg xa mode machine. Today we upgraded to 1.8d. We do have 370ACCOM set on by default with almost every virtual machine. Maybe this is the difference in working or not. len ------------------------------------------------------------------------- Leonard Boyle, Mainframe support [log in to unmask] SAS Institute Inc. ussas4hs@ibmmail Room E206 (919) 677-8000 ext 6241 203 SAS Campus Drive Cary NC 27513