There is a patch available that fixes some minor problems in ENC version 4.1. These include fixing instances where text overran dialog boxes and incorrect labelling of one set of axes in pump noise calculations. The patch (and instructions for its installation) for the single user version is available at http://www.causalsystems.com/htm/download_patch_pc.htm. We recommend that all version 4.1 users install the patch. Note that this patch can ONLY be applied to version 4.1. If you have an earlier version and believe that you should have version 4.1, please email vibraphon@telia.com or colin.hansen@causalsystems.com