Trouble Following Pier Example in Master Thesis

Hi all, I've been having trouble with the Pier Adaptive Forms example in the thesis titled "Magritte — Meta-Described Web Application Development". In particular, I've typed all the necessary code in my browser, prefixing "PR" and "MA" where I think should be appropriate. I can add the Form, but the "Edit Form" command that I created will not work. I get the following output when clicking on the "Edit Form" link: (In HTML format) PREditFormCommand(Object)>>doesNotUnderstand: #labelselfa PREditFormCommandtempsaMessagelabelinst varspropertiesnilcontexta PRContext stucture: 'Test Form' command: 'Edit Form'answernilmetamodela MAContainer label: '' comment: nilMASelectorAccessor>>read:self(MASelectorAccessor read: #label write: #label:)tempsaModela PREditFormCommandinst varspropertiesnilreadSelector#labelwriteSelector#label:PREditFormCommand(Object)>>readUsing:selfa PREditFormCommandtempsaDescriptiona MAStringDescription label: 'Label' comment: nilinst varspropertiesnilcontexta PRContext stucture: 'Test Form' command: 'Edit Form'answernilmetamodela MAContainer label: '' comment: nil[] in MACheckedMemento(MAMemento)>>pullRaw {[:each | result at: each put: (self model readUsing: each)]}selfa MACheckedMemento model: a PREditFormCommandtempsresulta Dictionary(a MAStringDescription label: 'Kind' comment: nil->'Edit Form' )eacha MAStringDescription label: 'Label' comment: nilinst varspropertiesnilmodela PREditFormCommanddescriptiona MAPriorityContainer label: 'Container' comment: nilcacheniloriginalnil(snipped) Also, there seems to be a missing closing parenthesis on page 41 in the Form>>description method definition. The Pier setup is obtained by installing the Pier Unix Security 1.0.3-alpha from SqueakMap Package Loader. In this version of Pier, clicking on the "Environment" command link will also crash Pier, is this expected? Note: I am new to Smalltalk and Squeak. Thanks, -Bill