I've started using the really excellent ICal package (thanks Phillipe!), and just loaded the ICal Magritte package. On ICCalendarEntry class>>descriptionUrl, the definition is: descriptionUrl ^(NAUrlDescription selector: #url label: 'Link' priority: 1000) beEditable; yourself NAUrlDescription is not defined anywhere - I would expect it to be named MAUrlDescription, but that isn't defined in my image either ;) Any ideas where I can get this class, or what else should be in here? Thanks! Brian