Hi!
I'm trying to write GUI element with Spec, Pharo6.1x64 on Linux.
Do according to the SpecBooklet.

Finished the fragment, and try do:

ui := GUI_ListCourtCase new openWithSpec . -> #value was sent to nil.

I look in a debugger and:

openWithSpecLayout: aSpec
������ "Build the widget using the spec name provided as argument and display it into a window"

������ (window value notNil and: [ self needRebuild not ])
������ ������ ifTrue: [ "window != nil"
������ ������ ������ window value rebuildWithSpecLayout: aSpec ]
������ ������ ifFalse: [�� "If value = Nil���� --> send him a message ???"
������ ������ ������ window value: (self defaultWindowModelClass new model: self).
������ ������ ������ window value openWithSpecLayout: aSpec.
������ ������ ������ self takeKeyboardFocus ].
������ ������
������ ^ window value