I have started to look at Seaside in Pharo. There seems to be a problem with the examples. When I enter http://localhost:8080/seaside/examples/examplebrowser (by clicking on examples and then examplebrowser) I will get a Seaside Walkback: Seaside Walkback MessageNotUnderstood: receiver of "root" is nil Debug Proceed Full Stack Possible Causes the receiver of the message is nil a class extension hasn't been loaded correctly you sent the wrong message Stack Trace thisContext UndefinedObject(Object)>>doesNotUnderstand: #root self nil aMessage root exception MessageNotUnderstood: receiver of "root" is nil resumeValue nil thisContext PRContext class>>kernel: self PRContext aKernel nil thisContext PRPierFrame>>initialRequest: self a PRPierFrame aRequest a WARequest GET /seaside/examples/examplebrowser thisContext [] in WARenderLoopMain>>start: self a WARenderLoopMain aRequest a WARequest GET /seaside/examples/examplebrowser root a WAExampleBrowser each a PRPierFrame thisContext PRPierFrame(WAPresenter)>>withNextPresentersDo: self a PRPierFrame aBlock [closure] in WARenderLoopMain>>start: Regards, Andreas