I think your problem is simply that you are trying to store a file with a single name, i.e., not in filename<dot>extension format (my.file). LISTSERV requires that files have both a filename and an extension. I believe the documentation covers this point but I will check it to make sure. Also, you're not using LISTSERV Lite, are you? List-level catalogs aren't supported under LISTSERV Lite. Nathan