[xwiki-users] About e-mail notification

Hi, I tried to use this plugin for the e-mail notification (www.jkraemer.net/tags/xwiki), but I got this error on my local XWiki (version 1.1): Error number 4001 in 4: Error while parsing velocity page Wrapped Exception: Invocation of method 'processSubscription' in class net.jkraemer.xwiki.plugins.emailnotify.EmailNotificationPluginApi threw exception java.lang.NoSuchMethodError: com.xpn.xwiki.objects.classes.BaseClass.newObject()Lcom/xpn/xwiki/objects/BaseCollection; @ [5,13] I've seen that plugin was developed for the 0.9 XWiki, so maybe that's the reason why it's not working. Has anyone else tried to use it? Are there other ways to have an e-mail notification system in XWiki? Thanks, Vito