Sorry if this is the wrong place to ask this. I am trying to understand how Magritte works, initially by following the first example in Ch. 26.2 of the Seaside book. I have started with a fresh download of Pharo 3.0, and I have installed Magritte 3 and Seaside 3. I realise that the Seaside book example is based on Magritte 2, so I have made necessary changes to the example code (descriptions are on the instance side, insert <magritteDescription> pragmas, change #description to #magritteDescription). All works well up to the point where I try to generate the Seaside editor. This fails because the code:

produces a 'does not understand' message for #asComponent. I have not been able to work through all of Seaside to see where this method is defined, and I am at a bit of a loss. I know this is rather elementary, but could someone give me a pointer?