The update file was provided for (1) sites which want source code and (2) sites which do not use the LISTSERV version of CARD (see the 1.6d release notes for more information). If you don't care about source code, you should install the object code fix. In this particular case you should wait until I release the version that works with SFS, as it will obsolete 17A-004o. I am waiting for a CMS6 site to check that it works under CMS6 before doing so. Eric